Journal of Pathology and Translational Medicine

Review

Standardized Pathology Report for Colorectal Cancer, 2nd Edition: Baek-hui Kim, Joon Mee Kim, Gyeong Hoon Kang, Hee Jin Chang, Dong Wook Kang, Jung Ho Kim, Jeong Mo Bae, An Na Seo, Ho Sung Park, Yun Kyung Kang, Kyung-Hwa Lee, Mee Yon Cho, In-Gu Do, Hye Seung Lee, Hee Kyung Chang, Do Youn Park, Hyo Jeong Kang, Jin Hee Sohn, Mee Soo Chang, Eun Sun Jung, So-Young Jin, Eunsil Yu, Hye Seung Han, Youn Wha Kim; J Pathol Transl Med. 2020;54(1):1-19. Published online November 13, 2019; DOI: https://doi.org/10.4132/jptm.2019.09.28

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The first edition of the ‘Standardized Pathology Report for Colorectal Cancer,’ which was developed by the Gastrointestinal Pathology Study Group (GIP) of the Korean Society of Pathologists, was published 13 years ago. Meanwhile, there have been many changes in the pathologic diagnosis of colorectal cancer (CRC), pathologic findings included in the pathology report, and immunohistochemical and molecular pathology required for the diagnosis and treatment of colorectal cancer. In order to reflect these changes, we (GIP) decided to make the second edition of the report. The purpose of this standardized pathology report is to provide a practical protocol for Korean pathologists, which could help diagnose and treat CRC patients. This report consists of “standard data elements” and “conditional data elements.” Basic pathologic findings and parts necessary for prognostication of CRC patients are classified as “standard data elements,” while other prognostic factors and factors related to adjuvant therapy are classified as “conditional data elements” so that each institution could select the contents according to the characteristics of the institution. The Korean version is also provided separately so that Korean pathologists can easily understand and use this report. We hope that this report will be helpful in the daily practice of CRC diagnosis.

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Original Article

IDH Mutation Analysis in Ewing Sarcoma Family Tumors: Ki Yong Na, Byeong-Joo Noh, Ji-Youn Sung, Youn Wha Kim, Eduardo Santini Araujo, Yong-Koo Park; J Pathol Transl Med. 2015;49(3):257-261. Published online May 15, 2015; DOI: https://doi.org/10.4132/jptm.2015.04.14

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Abstract PDF

Background
Isocitrate dehydrogenase (IDH) catalyzes the oxidative decarboxylation of isocitrate to yield α-ketoglutarate (α-KG) with production of reduced nicotinamide adenine dinucleotide (NADH). Dysfunctional IDH leads to reduced production of α-KG and NADH and increased production of 2-hydroxyglutarate, an oncometabolite. This results in increased oxidative damage and stabilization of hypoxia-inducible factor α, causing cells to be prone to tumorigenesis. Methods: This study investigated IDH mutations in 61 Ewing sarcoma family tumors (ESFTs), using a pentose nucleic acid clamping method and direct sequencing. Results: We identified four cases of ESFTs harboring IDH mutations. The number of IDH1 and IDH2 mutations was equal and the subtype of IDH mutations was variable. Clinicopathologic analysis according to IDH mutation status did not reveal significant results. Conclusions: This study is the first to report IDH mutations in ESFTs. The results indicate that ESFTs can harbor IDH mutations in previously known hot-spot regions, although their incidence is rare. Further validation with a larger case-based study would establish more reliable and significant data on prevalence rate and the biological significance of IDH mutations in ESFTs.

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Targeting metastasis in paediatric bone sarcomas
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Case Study

A Giant Peritoneal Loose Body: Hyun-Soo Kim, Ji-Youn Sung, Won Seo Park, Youn Wha Kim; Korean J Pathol. 2013;47(4):378-382. Published online August 26, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.4.378

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Abstract PDF

Peritoneal loose bodies (PLBs) are usually discovered incidentally during laparotomy or autopsy. A few cases of giant PLBs presenting with various symptoms have been reported in the literature. Here, we describe a case of a giant PLB incidentally found in the pelvic cavity of a 50-year-old man. Computed tomography revealed a free ovoid mass in the pelvic cavity that consisted of central dense, heterogeneous calcifications and peripheral soft tissue. The mass was an egg-shaped, hard, glistening concretion measuring 7.5×7.0×6.8 cm and weighing 160 g. This concretion consisted of central necrotic fatty tissue surrounded by concentrically laminated, acellular, fibrous material. Small PLBs usually do not require any specific treatment. However, if PLBs cause alimentary or urinary symptoms due to their large size, surgical removal may be recommended. It is essential for clinicians to be aware of this entity and its characteristic features to establish the correct diagnosis.

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Original Article

Proposal for a Standardized Pathology Report of Gastroenteropancreatic Neuroendocrine Tumors: Prognostic Significance of Pathological Parameters: Mee-Yon Cho, Jin Hee Sohn, So Young Jin, Hyunki Kim, Eun Sun Jung, Mi-Jung Kim, Kyoung-Mee Kim, Woo Ho Kim, Joon Mee Kim, Yun Kyung Kang, Joon Hyuk Choi, Dae Young Kang, Youn Wha Kim, Eun Hee Choi; Korean J Pathol. 2013;47(3):227-237. Published online June 25, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.3.227

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Abstract PDF

Background

There is confusion in the diagnosis and biological behaviors of gastroenteropancreatic neuroendocrine tumors (GEP-NETs), because of independently proposed nomenclatures and classifications. A standardized form of pathology report is required for the proper management of patients.

Methods

We discussed the proper pathological evaluation of GEP-NET at the consensus conference of the subcommittee meeting for the Gastrointestinal Pathology Study Group of the Korean Society of Pathologists. We then verified the prognostic significance of pathological parameters from our previous nationwide collection of pathological data from 28 hospitals in Korea to determine the essential data set for a pathology report.

Results

Histological classification, grading (mitosis and/or Ki-67 labeling index), T staging (extent, size), lymph node metastasis, and lymphovascular and perineural invasion were significant prognostic factors and essential for the pathology report of GEP-NET, while immunostaining such as synaptophysin and chromogranin may be optional. Furthermore, the staging system, either that of the 2010 American Joint Cancer Committee (AJCC) or the European Neuroendocrine Tumor Society (ENETS), should be specified, especially for pancreatic neuroendocrine neoplasms.

Conclusions

A standardized pathology report is crucial for the proper management and prediction of prognosis of patients with GEP-NET.

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Case Study

Papillary Carcinoma of the Thyroid Gland with Nodular Fasciitis-like Stroma: Ki Yong Na, Hyun-Soo Kim, Ji-Youn Sung, Won Seo Park, Youn Wha Kim; Korean J Pathol. 2013;47(2):167-171. Published online April 24, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.2.167

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Abstract PDF

Papillary thyroid carcinoma with nodular fasciitis-like stroma (PTC-NFS) is a rare variant of PTC. The term 'PTC with fibromatosis-like stroma' has been used as a synonym to describe this variant. It is characterized by extensive proliferation of fibroblasts and myofibroblasts in the tumor stroma, which occurs in up to 80% of the tumors. We herein describe a case of PTC-NFS which developed in a 49-year-old woman with the demonstration of findings of ultrasonography, fine needle aspiration cytology and histological examination of the lesion. To characterize the stromal components, we investigated the expression of several immunohistochemical markers which have been shown to be expressed differently in nodular fasciitis (NF) and fibromatosis (FM). The immunostaining results demonstrated nuclear and cytoplasmic accumulation of β-catenin, cytoplasmic transforming growth factor-β expression and nuclear Smad expression in the stromal cells, suggesting that the stromal cells in this case have similar molecular profiles to those of FM rather than NF.

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Pranjal Kalita, Biswajit Dey, Vandana Raphael, Gauranga Handique, Sungjemla Longkumer, Nikhil Choudhary
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Comparative Evaluation of Machine Learning Algorithms with Data Balancing Approach and Hyperparameter Tuning in Predicting Thyroid Disorder Recurrence
Darnell Ignasius, Rhyan David Levandra, Ramadhan Rakhmat Sani, Ika Novita Dewi
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Papillary thyroid carcinoma with desmoid-type fibromatosis: the clinicopathological features with characteristic imaging and molecular correlation requiring comprehensive treatment
Haining Huang, Lei Li, Xiaolong Liu, Lihua Zhao, Zhihong Cui, Renya Zhang, Shuai Chen
Human Pathology.2023; 136: 84. CrossRef
Papillary Thyroid Carcinoma with Desmoid-Type Fibromatosis: Review of Published Cases
Abdallah Roukain, Stefano La Rosa, Massimo Bongiovanni, Marie Nicod Lalonde, Valérie Cristina, Michael Montemurro, Stephane Cochet, Alexandra Luquain, Peter A. Kopp, Gerasimos P. Sykiotis
Cancers.2021; 13(17): 4482. CrossRef
Case of medullary thyroid carcinoma with desmoid‐type fibromatosis
Yoon Ah Cho, Young Lyun Oh
Pathology International.2020; 70(6): 364. CrossRef
SOX11 expression in a case of papillary thyroid carcinoma with fibromatosis/fasciitis-like stroma containing BRAF c.1799_1801delTGA and CTNNB1 c.133T>C mutations
Soon Boon Justin Wong, Min En Nga, Michal Michal, Tomas Vanecek, Ju Ee Seet, Fredrik Petersson
Virchows Archiv.2019; 475(4): 519. CrossRef
Papillary thyroid cancer with extrathyroidal extension of desmoid-type fibromatosis. A case report of an aggressive presentation of an uncommon pathologic entity
Eve M. Roth, Courtney E. Barrows, Michiya Nishino, Barry Sacks, Per-Olof Hasselgren, Benjamin C. James
International Journal of Surgery Case Reports.2019; 63(C): 5. CrossRef
Papillary thyroid carcinoma with nodular fasciitis-like stroma and β-catenin mutations should be renamed papillary thyroid carcinoma with desmoid-type fibromatosis
Caterina Rebecchini, Antoine Nobile, Simonetta Piana, Rossella Sarro, Bettina Bisig, Sykiotis P Gerasimos, Chiara Saglietti, Maurice Matter, Laura Marino, Massimo Bongiovanni
Modern Pathology.2017; 30(2): 236. CrossRef
Papillary thyroid carcinoma with desmoid-type fibromatosis: A clinical, pathological, and immunohistochemical study of 14 cases
Nami Takada, Mitsuyoshi Hirokawa, Masahiro Ito, Aki Ito, Ayana Suzuki, Miyoko Higuchi, Seiji Kuma, Toshitetsu Hayashi, Masao Kishikawa, Shuichi Horikawa, Akira Miyauchi
Endocrine Journal.2017; 64(10): 1017. CrossRef
A Case of Papillary Thyroid Carcinoma with Fasciitis-like Stroma
Toshihiko WAKU, Hiroshi SONOBE
Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association).2016; 77(12): 2892. CrossRef
Stromal Modulation and its Role in the Diagnosis of Papillary Patterned Thyroid Lesions
Sahar Aly Daoud, Reham Shehab El Nemr Esmail, Amal Ahmed Hareedy, Abdullah Khalil
Asian Pacific Journal of Cancer Prevention.2015; 16(8): 3307. CrossRef
Papillary Thyroid Carcinoma With Nodular Fasciitis–Like Stroma
Paula S. Ginter, Theresa Scognamiglio
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Notch and TGF-β/Smad3 pathways are involved in the interaction between cancer cells and cancer-associated fibroblasts in papillary thyroid carcinoma
Jie Zhang, Yuan Wang, Dan Li, Shanghua Jing
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Brief Case Report

Actinomycotic Brain Abscess Developed 10 Years after Head Trauma: Ki Yong Na, Ji-Hye Jang, Ji-Youn Sung, Youn Wha Kim, Yong-Koo Park; Korean J Pathol. 2013;47(1):82-85. Published online February 25, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.1.82

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Unveiling a Rare Central Nervous System Infection: A Case of Primary Cerebral Actinomycosis
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Manish Kumar, Ankur Bajaj, Manjul Tripathi, BishanD Radotra, ManojK Tewari, ChiragK Ahuja
Neurology India.2019; 67(4): 1123. CrossRef

Case Reports

Multifocal Adenocarcinomas Arising within a Gastric Inverted Hyperplastic Polyp: Hyun-Soo Kim, Eun-Jung Hwang, Jae-Young Jang, Juhie Lee, Youn Wha Kim; Korean J Pathol. 2012;46(4):387-391. Published online August 23, 2012; DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.4.387

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Abstract PDF

We present herein the occurrence of multifocal adenocarcinomas with a minute signet ring cell carcinoma that arose within a gastric inverted hyperplastic polyp (IHP) in a 40-year-old woman. Endoscopic ultrasonography demonstrated a heterogeneous hypoechoic mass in the third layer of the gastric wall. The endoscopic submucosal dissection specimen measuring 3.5×3.2×1.8 cm was a well-circumscribed protruding lesion that had a slit-shaped cavity. Histologically, the lesion consisted mainly of endophytic proliferation of hyperplastic columnar cells resembling normal foveolar epithelium. In addition, six foci of adenocarcinomas and a minute focus of signet ring cell carcinoma were randomly distributed in the superficial and deep regions. The adenocarcinoma was gradually transitioning from dysplasia, while the signet ring cell carcinoma was surrounded by hyperplastic foveolar epithelium. This is the first report of a gastric IHP with multifocal intramucosal adenocarcinomas and a signet ring cell carcinoma, and endoscopic submucosal dissection is used to completely resect it.

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Case report and literature analysis of ectopic gastric glands combined with intestinal-type gastric cancer in an HP-negative background
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Clinicopathologic and endoscopic characteristics of ten patients with gastric hamartomatous inverted polyp: a single center case series
Ningning Dong, Fandong Meng, Bing Yue, Junzhen Hou
BMC Gastroenterology.2024;[Epub] CrossRef
Gastric hamartomatous inverted polyp: Report of three cases with a review of the endoscopic and clinicopathological features
Takuya Ohtsu, Yu Takahashi, Mitsuo Tokuhara, Tomomitsu Tahara, Mitsuaki Ishida, Chika Miyasaka, Koji Tsuta, Makoto Naganuma
DEN Open.2023;[Epub] CrossRef
Gastric Inverted Hyperplastic Polyp Removed Using Endoscopic Submucosal Dissection
Jee Won Boo, Joon Sung Kim, Byung-Wook Kim
The Korean Journal of Helicobacter and Upper Gastrointestinal Research.2023; 23(1): 63. CrossRef
The Many Faces of Gastric Inverted Polyps: a case report
S.I. Kim, M.Y. Agapov, T.F. Savostyanov, A.A. Paratovskaya, I.A. Sokolova
Russian Journal of Evidence-Based Gastroenterology.2023; 12(2): 88. CrossRef
Large gastric hamartomatous inverted polyp accompanied by advanced gastric cancer: A case report
Gyerim Park, Jihye Kim, Sung Hak Lee, Younghoon Kim
World Journal of Clinical Cases.2023; 11(28): 6967. CrossRef
Activating KRAS and GNAS mutations in heterotopic submucosal glands of the stomach
Hourin Cho, Taiki Hashimoto, Tomoaki Naka, Yasushi Yatabe, Ichiro Oda, Yutaka Saito, Takaki Yoshikawa, Shigeki Sekine
Journal of Gastroenterology.2022; 57(5): 333. CrossRef
Gastric Inverted Polyps—Distinctive Subepithelial Lesions of the Stomach
Ji-Ye Kim, Soomin Ahn, Kyoung-Mee Kim, Sun Hee Chang, Han Seong Kim, Jun Haeng Lee, Jae J. Kim, Tae Sung Sohn, Hye Ju Kang, Mee Joo
American Journal of Surgical Pathology.2021; 45(5): 680. CrossRef
Signet-ring Cell Carcinoma in Hyperplastic Polyp of the Stomach
Kenta Yoshida, Tatsuya Mikami, Takao Oyama, Yuki Sato, Taro Saito, Takafumi Mikami, Chieko Itabashi, Yasushi Soma, Shinsaku Fukuda
Internal Medicine.2019; 58(24): 3531. CrossRef
Inverted Hyperplastic Polyp in Stomach: A Case Report and Literature Review
Yeon Ho Lee, Moon Kyung Joo, Beom Jae Lee, Ji-Ae Lee, Taehyun Kim, Jin Gu Yoon, Jung Min Lee, Jong-Jae Park
The Korean Journal of Gastroenterology.2016; 67(2): 98. CrossRef
Inflammatory myofibroblastic tumor‐like stromal proliferation within gastric inverted hyperplastic polyp
Byeong‐Joo Noh, Ji Won Min, Ji‐Youn Sung, Yong‐Koo Park, Juhie Lee, Youn Wha Kim
Pathology International.2016; 66(3): 180. CrossRef
Gastric inverted hyperplastic polyp: A rare cause of iron deficiency anemia
Jin Tak Yun, Seung Woo Lee, Dong Pil Kim, Seung Hwa Choi, Seok-Hwan Kim, Jun Kyu Park, Sun Hee Jang, Yun Jung Park, Ye Gyu Sung, Hae Jung Sul
World Journal of Gastroenterology.2016; 22(15): 4066. CrossRef
Gastric Inverted Hyperplasic Polyp Composed Only of Pyloric Glands
Minsun Jung, Kyueng-Whan Min, Young-Joon Ryu
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A Pedunculated Submucosal Lesion in the Stomach with Inverted Downgrowth
Yoshihiko Miyamoto, Naoki Muguruma, Seisuke Okamura, Yasuyuki Okada, Shinji Kitamura, Koichi Okamoto, Akiko Yoneda, Noriko Kagawa, Tetsuji Takayama
Internal Medicine.2014; 53(15): 1625. CrossRef

Multifocal Renal Cell Carcinoma of Different Histological Subtypes in Autosomal Dominant Polycystic Kidney Disease: Ki Yong Na, Hyun-Soo Kim, Yong-Koo Park, Sung-Goo Chang, Youn Wha Kim; Korean J Pathol. 2012;46(4):382-386. Published online August 23, 2012; DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.4.382

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Abstract PDF

Renal cell carcinoma (RCC) in autosomal dominant polycystic kidney (ADPKD) is rare. To date, 54 cases of RCC in ADPKD have been reported. Among these, only 2 cases have different histologic types of RCC. Here we describe a 45-year-old man who received radical nephrectomy for multifocal RCC with synchronous papillary and clear cell histology in ADPKD and chronic renal failure under regular hemodialysis. The case reported herein is another example of the rare pathological finding of RCC arising in a patient with ADPKD.

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Pellino1-mTOR/S6K1 signaling axis is a key pathogenesis for the development of polycystic kidney disease
Suhyeon Kim, Min-Hee Kim, Bo-Kyoung Ko, Kyung-Mo Kim, Naiyu Wang, Su-Mi Jo, Heounjeong Go, Eun-Ji Park, Chang-Woo Lee
Cell Death & Disease.2026;[Epub] CrossRef
Autosomal Dominant Polycystic Kidney Disease-Related Multifocal Renal Cell Carcinoma: A Narrative Iconographic Review
Consolato M. Sergi, Luis Guerra, Josef Hager
International Journal of Molecular Sciences.2025; 26(9): 3965. CrossRef
Autosomal Dominant Polycystic Kidney Disease Patients Requiring Nephrectomy: Characteristics and Surgical Considerations
Joel Ern Zher Chan, Kate S. Olakkengil, Shantanu Bhattacharjya, Santosh Antony Olakkengil
ANZ Journal of Surgery.2025; 95(7-8): 1605. CrossRef
Renal Cell Carcinoma in the Background of Autosomal Dominant Polycystic Kidney Disease: Report of Two Cases and Review of Literature
Poorva Vias, Shikha Goyal, Renu Madan, Nandita Kakkar, Ridhi Sood, Kannan Periasamy, Rajender Kumar
Indian Journal of Medical and Paediatric Oncology.2024; 45(02): 188. CrossRef
Detection of two synchronous histologically different renal cell carcinoma subtypes in the same kidney: a case report and review of the literature
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Journal of Medical Case Reports.2024;[Epub] CrossRef
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Petronella Orosz, Zita Kollák, Ákos Pethő, András Fogarasi, György Reusz, Kinga Hadzsiev, Tamás Szabó
Children.2023; 10(3): 420. CrossRef
Autosomal dominant polycystic kidney disease coming up with an unusual presentation of renal cell carcinoma on its first encounter
Asma Shoukat Masumdar, Anitha Padmanabhan, Nitin Gadgil, Gargi Padalkar
Indian Journal of Pathology and Oncology.2023; 10(4): 417. CrossRef
Sarcomatoid renal cell carcinoma with autosomal dominant polycystic kidney disease: a case report and literature review
Yuji Hakozaki, Kiyotaka Uchiyama, Akane Yanai, Daisuke Yamada, Yuka Kamijo, Yoshitaka Ishibashi
CEN Case Reports.2021; 10(2): 199. CrossRef
CT and MRI findings of cystic renal cell carcinoma: comparison with cystic collecting duct carcinoma
Qingqiang Zhu, Jun Ling, Jing Ye, Wenrong Zhu, Jingtao Wu, Wenxin Chen
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Incidental occurrence of papillary renal cell carcinoma in the native kidney with autosomal dominant polycystic kidney disease after renal transplantation: A case report
Mahmoud Abbas, Melanie Pätzel, Angelika Thurn, Olaf Brinkmann, Olaf Bettendorf
Molecular and Clinical Oncology.2021;[Epub] CrossRef
Xp11.2 translocation renal cell carcinoma in the autosomal dominant polycystic kidney disease patient with preserved renal function
Hyuk Huh, Hyung Ah Jo, YongJin Yi, Seung Hyup Kim, Kyung Chul Moon, Curie Ahn, Hayne Cho Park
The Korean Journal of Internal Medicine.2017; 32(6): 1108. CrossRef
The Association between Autosomal Dominant Polycystic Kidney Disease and Renal Cell Carcinoma
Chase C. Hansen, Michael Derrick, Irfan Warriach, James Thomas Cammack, James Thomas Cammack, Werner de Riese
Open Journal of Urology.2015; 05(06): 84. CrossRef
The MSCT and MRI findings of collecting duct carcinoma
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Ectopic Epididymis in Testicular Appendices: Report of Two Cases.: Hyun Soo Kim, Gou Young Kim, Hyung Lae Lee, Youn Wha Kim, Sung Jig Lim; Korean J Pathol. 2011;45:S11-S14.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.S1.S11

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Abstract PDF: We report two cases of ectopic epididymal ducts and efferent ductules in the testicular appendices (TAs) of adult men with normally descended testes. In both cases, a sessile TA was incidentally found at the upper pole of the right testis during the scrotal hydrocelectomy. Microscopically, a few closely arranged tubules were detected within the TA. In the first case, the tubules were lined with a pseudostratified columnar epithelium with numerous, long microvilli, and were surrounded by a smooth muscle coat. In contrast, in the second case, the tubules had a wavy luminal surface, because ciliated columnar cells alternated with groups of cuboidal cells. In both cases, strong CD10 immunoreactivity was observed in the luminal border of the lining epithelium. Surgical pathologists should be aware of the presence of both ectopic epididymal ducts and efferent ductules that can occur in TAs, in order to avoid misinterpretation as transected, functional reproductive structures.

Original Article

14-bp Insertion/Deletion Polymorphism of the HLA-G Gene in Osteosarcoma Patients.: Ahrim Moon, Su Kang Kim, Joo Ho Chung, Ki Yong Na, Liliana G Olvi, Eduardo Santini-Araujo, Youn Wha Kim, Yong Koo Park; Korean J Pathol. 2011;45(5):485-490.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.5.485

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Abstract PDF

BACKGROUND
The major histocompatibility complex class I, G (human leukocyte antigen-G [HLA-G]) gene plays a vital role in the suppression of immune responses. Recently, a number of studies have reported an association between HLA-G and diseases (pregnancy complications, organ transplantation, and tumors). Some of the studies have revealed that the 14-bp insertion/deletion polymorphism might be associated with various diseases. The aim of the present study was to explore a possible influence of the 14-bp insertion/deletion polymorphism on osteosarcoma.
METHODS
Genomic DNA was extracted from 75 formalin-fixed, paraffin-embedded tumor tissues derived from patients with conventional osteosarcoma (OSA) and 183 peripheral blood samples of healthy controls. Fifty-eight cases were South Korean patients with OSA and 17 cases were Argentine patients with OSA. The HLA-G 14-bp insertion/deletion polymorphism at exon 8 of the HLA-G locus was analyzed by polymerase chain reaction.
RESULTS
There was a significantly different distribution profile for the 14-bp genotypes between the Korean OSA and Korean control groups. Specifically, there were more heterozygote 210 bp/224 bp genotypes in the Korean OSA group when compared to the Korean control group (62.1% vs 40.4%, p=0.002).
CONCLUSIONS
The results suggest that HLA-G heterozygote patients may be more susceptible to OSA in the Korean population.

Citations

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14-bp Insertion/Deletion Polymorphism of the HLA-G gene in Breast Cancer among Women from North Western Iran
Mehdi Haghi, Mohammad Ali Hosseinpour Feizi, Majid Sadeghizadeh, Abbas Sahebghadam Lotfi
Asian Pacific Journal of Cancer Prevention.2015; 16(14): 6155. CrossRef

Case Report

Collision Tumor Composed of a Granulocytic Sarcoma and an Adenocarcinoma of the Stomach: A Case Report.: Kyu Yeoun Won, Juhie Lee, Yong Ho Kim, Youn Wha Kim; Korean J Pathol. 2011;45(2):201-204.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.2.201

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Abstract PDF

Granulocytic sarcoma, also called chloroma or myeloblastoma, is an extramedullary invasive tumor composed of neoplastic myeloid cells. In this report, we describe a 43-year-old male patient with a collision tumor composed of an adenocarcinoma and a granulocytic sarcoma in the stomach. The coexistence of a granulocytic sarcoma and adenocarcinoma in the stomach has, to the best of our knowledge, not been reported in the literature. The diagnosis of granulocytic sarcoma is very difficult; especially in the absence of concurrent hematologic disease or in the uncommon setting of coexistence with another tumor. Cautious observation is needed when a finding of unusual atypical cells admixed with an adenocarcinoma in the stomach is confronted.

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Leukemia in gastrointestinal organs as cause of treatment failure: 378 cases analyzed
Isabel Cunningham, Daniel Worthley
American Journal of Hematology.2018; 93(11): 1327. CrossRef
One cancer destroys another: short report of a myeloid sarcoma causing ischaemic necrosis of an adenocarcinoma
D Tucker, P Sarsfield, I Chandler, P Kerr
Journal of Clinical Pathology.2014; 67(1): 70. CrossRef

Original Articles

The Global Histone Modification Patterns of Osteosarcoma.: Sung Im Do, Sung Jig Lim, Youn Wha Kim, Liliana G Olvi, Eduardo Santini-Araujo, Yong Koo Park; Korean J Pathol. 2011;45(2):146-150.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.2.146

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Abstract PDF: BACKGROUND
Epigenetic alteration may affect a patient's prognosis by altering the development and progression of the tumor. Some recent reports have identified a correlation between histone modification and patient outcome. However, no studies have been conducted on global histone modification in osteosarcomas.
METHODS
We investigated histone modification in 54 cases of osteosarcoma by performing immunohistochemical staining. The immunohistochemical expression of four histone modification markers, acetylated H4 lysine 12 (H4K12Ac), acetylated H3 lysine 18, trimethylated H3 lysine 27, and dimethylated H3 lysine 4 were evaluated.
RESULTS
High H4K12Ac expression was correlated with patient age (p=0.011). However, the other histone modification markers showed no correlation with any of the clinicopathological data such as survival, tumor grade, tumor site, metastasis, age, or gender.
CONCLUSIONS
Our study showed that all four histone modification markers are expressed in osteosarcoma (median expression rate, 40 to 60%). However, we did not find a correlation with the clinicopathological factors except for age. Further study to evaluate the reason for the association between H4K12Ac and patient age is needed.

Uncoupling Protein 2 (UCP2) and p53 Expression in Invasive Ductal Carcinoma of Breast.: Kyu Yeoun Won, Gou Young Kim, Youn Wha Kim, Sung Jig Lim, Jeong Yoon Song; Korean J Pathol. 2010;44(6):565-570.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.6.565

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Abstract PDF

BACKGROUND
Uncoupling protein 2 (UCP2) is a recently identified mitochondrial inner membrane anion carrier and a negative regulator of reactive oxygen species production. In this study, we evaluated the characteristics and relationships of UCP2 and p53 expression in breast cancer tissues.
METHODS
Tissue microarray slides from 107 cases of invasive ductal carcinoma of the breast were constructed, UCP2 and p53 immunohistochemical staining was conducted, and clinicopathological correlations were investigated.
RESULTS
UCP2 expression in invasive ductal carcinoma was high in 53 cases (49.5%), while p53 expression in invasive ductal carcinoma was high in 37 cases (34.6%). UCP2 expression was correlated significantly with histological grade (p = 0.038) and mitotic count (p = 0.050). UCP2 expression was correlated significantly with p53 expression in invasive ductal carcinoma of the breast (p = 0.045). UCP2 expression (p = 0.8308) and p53 expression (p = 0.3292) showed no significant difference for the overall survival rate in patients with invasive ductal carcinoma.
CONCLUSIONS
UCP2 expression in invasive ductal carcinoma increased proportionally with histological grade and mitotic count. High UCP2 expression in invasive ductal carcinoma was observed in conjunction with high p53 expression.

Citations

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Forkhead box protein A1 inhibits the expression of uncoupling protein 2 in hydrogen peroxide-induced A549 cell line
Lan Song, Zhaojun Xu, Ling Li, Mei Hu, Lijuan Cheng, Lingli Chen, Bo Zhang
Cell Stress and Chaperones.2014; 19(1): 53. CrossRef
New Aspects of Mitochondrial Uncoupling Proteins (UCPs) and Their Roles in Tumorigenesis
Delira Robbins, Yunfeng Zhao
International Journal of Molecular Sciences.2011; 12(8): 5285. CrossRef

Case Report

Chondromyxoid Fibroma of the Ethmoid Sinus Complicated by a Brain Abscess: A Case Report and Literature Review.: Kyu Yeoun Won, Juhie Lee, Youn Wha Kim, Eui Jong Kim, Sung Wan Kim, Yong Koo Park; Korean J Pathol. 2010;44(5):547-550.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.5.547

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Abstract PDF

Chondromyxoid fibroma (CMF) is a relatively rare bone tumor that was first described by Jaffe and Lichtenstein in 1948. CMF of the sinonasal tract is very rare. A 28-year-old male presented with long-standing, intermittent, pulsatile pain in the right temporal area. A computed tomography scan showed a 20 x 19 mm round, bony density in the right ethmoid sinus with fluid collection in the ethmoid and frontal sinuses. Additionally, a cystic lesion with surrounding edema was found in the right frontal lobe. The patient underwent a partial ethmoidectomy and frontostomy. A histological examination showed polygonal and stellate cells in a myxoid and chondroid background with a pattern of lobulation and plaque-like calcification. The bone lesion was revealed as a CMF of the ethmoidal sinus, and the frontal lobe cystic lesion was a brain abscess associated with the CMF. We present the case of a CMF of the ethmoid sinus complicated by a brain abscess.

Citations

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Juxtacortical chondromyxoid fibroma in the small bones: two cases with unusual location and a literature review
Sun-Ju Oh, So Hak Chung
Journal of Pathology and Translational Medicine.2022; 56(3): 157. CrossRef
Treatment of cryotherapy and orthotopic transplantation following chondromyxoid fibroma of zygomatic bone
Zhi-Chao Zhu, Yi-Fei Yang, Xu Yang, Yan Liu, Yi-nan Cheng, Zhao-Yao Sun, Tian-Shu Xu, Wen-Jun Yang
Medicine.2018; 97(31): e11707. CrossRef

Original Articles

Clinicopathological Significance of Invasive Ductal Carcinoma with High Prevalence of CD44(+)/CD24(-/low) Tumor Cells in Breast Cancer.: Ji Youn Sung, Gou Young Kim, Yong Koo Park, Juhie Lee, Youn Wha Kim, Sung Jig Lim; Korean J Pathol. 2010;44(4):390-396.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.4.390

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Abstract PDF

BACKGROUND
Epithelial tumor cells with a CD44(+)/CD24(-/low) immunoprofile may have the ability to cause breast cancer. We studied these cells and their clinicopathological significance.
METHODS
The clinicopathologic findings of 100 invasive ductal carcinoma (IDC) cases and 45 ductal carcinoma in situ (DCIS) cases were reviewed. CD44(+)/CD24(-/low) tumor cells were identified by immunohistochemistry, and their clinicopathological implications in IDC and DCIS were analyzed.
RESULTS
IDC with a high prevalence of CD44(+)/CD24(-/low) tumor cells was significantly associated with larger mass, higher grade, estrogen receptor (ER) negativity, and tumor cells with a higher frequency of metastasis. The proportion of CD44(+)/CD24(-/low) tumor cells in IDC, and its DCIS components was not significantly different, whereas the proportion of CD44(+)/CD24(-/low) tumor cells was higher in DCIS than in the DCIS component of IDC (p < 0.001).
CONCLUSIONS
IDC with a high prevalence of CD44(+)/CD24(-/low) tumor cells might correlate with aggressive features, such as ER and higher grades. Moreover, the proportion of CD44(+)/CD24(-/low) tumor cells in the DCIS components of IDC and DCIS might harbor different biology, which may lead to differences in cancer progression and early carcinogenesis.

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CD44 Marks Dormant Tumor Cells After HER2 Inhibition in Breast Cancer Cells
Carla Vargas, Adam Aguirre-Ducler, Karina Cereceda, Sebastián Quijada, Nicolás Escobar-Gómez, Rodrigo L. Castillo, Matías Escobar-Aguirre
International Journal of Molecular Sciences.2025; 26(10): 4907. CrossRef
Clinicopathologic Characteristics of Breast Cancer Stem Cells Identified on the Basis of Aldehyde Dehydrogenase 1 Expression
Yoon Seok Kim, Min Jung Jung, Dong Won Ryu, Chung Han Lee
Journal of Breast Cancer.2014; 17(2): 121. CrossRef
CD44/CD24 as potential prognostic markers in node-positive invasive ductal breast cancer patients treated with adjuvant chemotherapy
Agnieszka Adamczyk, Joanna A. Niemiec, Aleksandra Ambicka, Anna Mucha-Małecka, Jerzy Mituś, Janusz Ryś
Journal of Molecular Histology.2014; 45(1): 35. CrossRef

Expression of Raf-1 Kinase Inhibitory Protein in Extrahepatic Bile Duct Carcinoma.: Hyun Soo Kim, Gou Young Kim, Sung Jig Lim, Youn Wha Kim; Korean J Pathol. 2010;44(3):234-242.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.3.234

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Abstract PDF

BACKGROUND
Raf-1 kinase inhibitory protein (RKIP) recently has been identified as a metastasis suppressor in a variety of human carcinomas. The prognostic significance of RKIP expression in extrahepatic bile duct (EBD) carcinoma has not been studied. The aims of the current study were to evaluate RKIP expression and to determine the prognostic significance of RKIP expression in EBD carcinoma.
METHODS
Immunohistochemical staining for RKIP was performed for 131 cases of EBD carcinoma. The associations of RKIP expression with clinicopathologic parameters and patient outcomes were examined. Multivariate logistic regression analysis was used to identify independent predictive parameters for lymphovascular invasion and nodal and distant metastases.
RESULTS
Loss of RKIP expression was observed in 55.0% (72/131) of cases. EBD carcinoma had significantly lower RKIP immunoreactivity than normal EBD (p < 0.001). Loss of RKIP expression was significantly associated with lymphatic invasion (p = 0.030) and nodal metastasis (p = 0.036), but it was not found to be a significant prognostic predictor for overall, disease-free or distant metastasis-free survival. In addition, loss of RKIP expression was an independent predictor for lymphatic invasion (p = 0.027).
CONCLUSIONS
These results suggest that RKIP may play a role in the suppression of lymphatic invasion and nodal metastasis in EBD carcinoma.

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Down-regulation of osteoprotegerin expression as a novel biomarker for colorectal carcinoma
Hyun-Soo Kim, Gun Yoon, Sung-Im Do, Sung-Joo Kim, Youn-Wha Kim
Oncotarget.2016; 7(12): 15187. CrossRef
Expression of phosphorylated extracellular signal-regulated kinase at the invasive front of hepatic colorectal metastasis
HYUN-SOO KIM, SUNG-IM DO, BYEONG-JOO NOH, YOUNG IN JEONG, SUN JIN PARK, YOUN WHA KIM
Oncology Letters.2015; 9(3): 1261. CrossRef
Reduced expression of Raf-1 kinase inhibitory protein predicts regional lymph node metastasis and shorter survival in esophageal squamous cell carcinoma
Hyun-Soo Kim, Kyu Yeoun Won, Gou Young Kim, Soo Cheol Kim, Yong-Koo Park, Youn Wha Kim
Pathology - Research and Practice.2012; 208(5): 292. CrossRef
Expression of Raf-1 kinase inhibitory protein in carcinoma of the ampulla of Vater
Hyun-Soo Kim, Sun Ho Lee, Kyu Yeoun Won, Gou Young Kim, Yong-Koo Park, Youn Wha Kim
Virchows Archiv.2012; 460(1): 61. CrossRef
Raf-1 Kinase Inhibitory Protein Expression in Thyroid Carcinomas
Hyun-Soo Kim, Gou Young Kim, Sung-Jig Lim, Youn Wha Kim
Endocrine Pathology.2010; 21(4): 253. CrossRef
Loss of Raf-1 kinase inhibitory protein in pancreatic ductal adenocarcinoma
Hyun-Soo Kim, Gou Young Kim, Sung-Jig Lim, Youn Wha Kim
Pathology.2010; 42(7): 655. CrossRef

Expression of Cyclooxygenase-2 and Embryonic Lethal Abnormal Vision-Like Protein HuR in Gallbladder Carcinoma.: Sung Im Do, Gou Young Kim, Sung Jig Lim, Youn Wha Kim; Korean J Pathol. 2010;44(1):42-47.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.1.42

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Abstract PDF

BACKGROUND
Cyclooxygenase-2 (COX-2) is an enzyme that promotes proliferation of tumor cells. HuR is a member of the family of embryonic lethal abnormal vision-like proteins. Recent studies show that cytoplasmic HuR stabilizes the mRNA of COX-2 and regulates the expression of COX-2. Moreover, cytoplasmic HuR expression is associated with a poorer prognosis for patients with some cancers. The aim of this study was to investigate the expression patterns of and the relationship between COX-2 and HuR in gallbladder carcinoma.
METHODS
We analyzed COX-2 and HuR expression by immunohistochemical staining of 108 gallbladder carcinomas.
RESULTS
COX-2 expression and nuclear and cytoplasmic HuR expression were seen in, respectively, 61 (56.5%), 77 (71.3%), and 4 (3.7%) cases. COX-2 and nuclear HuR were simultaneously expressed in 44 of the 108 samples without any quantitative association between the levels of each. COX-2 expression correlated with tumor stage, differentiation (based on histology), lymph node metastasis, perineural invasion, and survival. Nuclear and cytological expression of HuR did not correlate with any clinical parameters.
CONCLUSIONS
COX-2 expression but not HuR may play an important role in the prognosis of patients with gallbladder carcinoma.

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Prognostic Molecular Markers in Resected Extrahepatic Biliary Tract Cancers; A Systematic Review and Meta-Analysis of Immunohistochemically Detected Biomarkers
Robert P Jones, Nicholas TE Bird, Richard A Smith, Daniel H Palmer, Steven W Fenwick, Graeme J Poston, Hassan Z Malik
Biomarkers in Medicine.2015; 9(8): 763. CrossRef

Usefulness of E-Cadherin Expression in Malignant Effusion .: Sung Jig Lim, Gou Young Kim, Youn Wha Kim, Yong Koo Park, Juhie Lee, Moon Ho Yang, Nam Hee Won; J Pathol Transl Med. 1999;10(2):121-126.

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Abstract PDF: The usefulness of E-cadherin immunostaining as a marker of malignancy in the body fluids was investigated in the present study. Thirty-three histologically proven cases of cell blocks from the pleural, peritoneal, and pericardial fluids were studied by immunocytochemistry for E-cadherin antibody using LSAB method. These cases were cytologically diagnosed as adenocarcinoma (25 cases) and atypical cells (8 cases). Tumor cells showed strong positive membranous staining for E-cadherin antibody in 21 out of 25 cases (84%) of adenocarcinoma. E-cadherin staining was not found in 6 of 8 cases of suspicious maligancy. The sensitivity and specificity were 84% and 75%, respectively. Reactive mesothelial cells and inflammatory cells scattered were all negative. In conclusion, E-cadherin is an useful adjunctive marker to distinguish reactive mesothelial cells from the carcinoma cells in the body fluids.

Grading System for Gastric Epithelial Proliferative Diseases Standardized Guidelines proposed by Korean Study Group for Pathology of Digestive Diseases.: Hoguen Kim, So Young Jin, Ja June Jang, Woo Ho Kim, Sang Yong Song, Kyu Rae Kim, Eun Sil Yu, Hyung Sik Shin, Han Kyeom Kim, Jin Hee Sohn, Eun Kyung Hong, Youn Wha Kim, Jin Sook Jeong, Chang Jin Kim, Shin Eun Choi, In Suh Park, Chan Il Park, Yong Il Kim; Korean J Pathol. 1997;31(5):389-400.

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Abstract PDF: The assessment of epithelial changes in gastric mucosal biopsies has been one of the major problems caused by inconsistencies in and disagreements about nomenclature and interpretation. To resolve these issues, members of the Study Group for Pathology of Digestive Diseases reviewed microslides of 50 gastric lesions showing varying degrees of mucosal abnormality and reached the following consensus; 1) the proliferating gastric epithelium can be divided into hyperplastic and neoplastic; 2) the term "dysplasia" is reserved for the microscopic epithelial changes that are unequivocally neoplastic; 3) Biopsy specimens can be categorized as regenerative(negative for dysplasia), indefinite(questionable dysplasia), positive(positive for dysplasia) and overt carcinoma; 4) The positive category can be divided into two subgroups, high grade dysplasia and low grade dysplasia. Criteria for each grade are presented and discussed. We offer these guidelines for establishing the correct diagnosis of the gastric mucosal biopsy specimens and for prospective studies.

Correlation Between Cyclooxygenase-2 Expression and HuR Cytoplasmic Translocation of Breast Cancer.: Sung Im Do, In Gu Do, Gou Young Kim, Sun Lee, Youn Wha Kim, Yong Koo Park, Juhie Lee, Sung Jig Lim; Korean J Pathol. 2008;42(2):75-80.

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Abstract PDF: BACKGROUND
Embryonic lethal abnormal vision (ELAV)-like protein HuR is known to stabilize mRNA through binding AU-rich elements in the 3'-untranslated region. Recent studies show that HuR expression is associated with the expression of several genes including cyclooxygenase-2 (COX-2). HuR exists predominantly in the nucleus, but cytoplasmic translocation of HuR is thought to be more important for its activity. COX-2 is a well-known enzyme that promotes tumor growth.
METHODS
To evaluate the correlation of HuR and COX-2 expression, we analyzed expression of HuR and COX-2 in 91 cases of breast cancer using immunohistochemistry.
RESULTS
Nuclear and cytoplasmic expression of HuR was seen in 76 (83.5%) and 19 (20.9%) of 91 cases respectively. COX-2 immunoreactivity was seen in 54 (59.4%) cases. Cytoplasmic HuR expression showed significant correlation with COX-2 expression (p=0.001). Nuclear HuR showed no correlation with COX-2 expression or other clinicopathological parameters. COX-2 expression is significantly associated with tumor grade (p=0.028). COX-2 (p=0.092) and cytoplasmic (p=0.569) and nuclear HuR (p=0.247) expression showed no correlation with survival.
CONCLUSIONS
These results suggest that cytoplasmic HuR expression is associated with COX-2 expression in breast cancer and cytoplasmic location of HuR might contribute to the stabilization of COX-2 mRNA.

A Histopathological Study of IgM Nephropathy.: Youn Wha Kim, Moon Ho Yang, Myung Jae Kim, Byoung Soo Cho; Korean J Pathol. 1986;20(2):165-177.

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Abstract PDF: 461 cases of renal biopsy specimens were summerized correlated with their light microscopic and immunofluorescence findings, which obtained from Jan. 1981 to Jul. 1986 at Department of Pathology, Kyung Hee School of Medicine, The results were as follws: 1) The incidence of IgM nephropathy was about 5.8% of the primary glomerulopathy. 2) Sex distribution showed male preponderance with male: female ratio of 1.7:1. 3) Age distribution were 0-9 years 7.4%, 10-19 years 29.6%, 20-29 years 37.0%, 30-39 years 7.4%, 40-49 years 7.4% and 50-59 years 11.1%. 4) The clinical symptoms were gross hematuria 7.4%, microscopic hematuria 59.2%, proteinuria (nonnephrotic) 37.0%, nephrotic syndrome 55.5%, hypertension 7.8% and edema 59.2%. 5) 9 cases (33.3%) had past histories of upper respiratory infections. 6) The distributions of the light microscopic deagnosis were minimal histologic change 11 cases (40.7%), focal glomerulonephritis 7 cases (25.9%), measangial proliferative glomerulonephritis 5 cases (18.5%), focal and segmental glomerulosclerosis 1 case (3.7%) and poststreptococla glomerulonephritis 1 case (3.7%). 7) Immunofluorescence study showed significant diffuse mesangial granular deposits of IgM and C3 in all of the 27 cases. 8) It was demonstrated that in the patients with nephrotic syndrome, the prognosis for the patients with IgM deposition were less favorable than those without IgM deposition.

A Standardized Pathology Report for Gastric Cancer.: Woo Ho Kim, Cheol Keun Park, Young Bae Kim, Youn Wha Kim, Ho Guen Kim, Han Ik Bae, Kyu Sang Song, Hee Kyung Chang, Hee Jin Chang, Yang Seok Chae; Korean J Pathol. 2005;39(2):106-113.

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Abstract PDF: BACKGROUND
AND METHODS: The Gastrointestinal Pathology Study Group of the Korean Society of Pathologists developed a standardized pathology reporting format for gastric cancer in collaboration with the Korean Gastric Cancer Association. RESULTS: The diagnostic parameters are divided into two part: the standard part and the optional part. The standard part contains most of the items listed in the Japanese classification, the TNM classification by UICC, the WHO classification, and the Korean Gastric Cancer Association classification. Therefore, the standard part is adequate for routine surgical pathology service. We included detailed descriptions on each item.
CONCLUSIONS
The authors anticipate that this standardization can improve the diagnostic accuracy and decrease the discrepancies that occur in the pathologic diagnosis of gastric cancer. Furthermore, the standard format can encourage large scale multi-institutional collaborative studies.

Case Reports

Pulmonary Lymphangioleiomyomatosis and Micronodular Pneumocyte Hyperplasia associated with Tuberous Sclerosis: A Case Report.: Gou Young Kim, Juhie Lee, Yong Koo Park, Youn Wha Kim, Jae Hoon Park, Moon Ho Yang; Korean J Pathol. 2002;36(1):51-54.

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Abstract PDF: Lymphangioleiomyomatosis (LAM) is characterized by a hamartomatous proliferation of smooth muscle cells in the lung, mediastium, and abdomen. In the lung, an abnormal proliferation of smooth muscle is seen along the airways, blood vessels, and lymphatics, resulting in honeycombing of the lung. It occurs in 0.1-1% of tuberous sclerosis (TSC) patients. Micronodular pneumocyte hyperplasia (MNPH) is a rare but distinctive pulmonary manifestation of TSC, and appears to be a hamartomatous proliferation of the type II pneumocytes. We report a case of pulmonary LAM and MNPH associated with TSC and bilateral renal angiomyolipoma in a 26-year-old woman. Immunohistochemically, the spindle cells of LAM were positive for HMB-45, but the type II pneumocytes of MNPH were negative.

Immunoblastic Sarcoma Arising in Angiommunoblastic Lymphadenopathy: A case report.: Youn Wha Kim, Hyun Sook Chi, Jung Kook Lee, Hui Joong Yoon; Korean J Pathol. 1986;20(3):388-394.

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Abstract: Angioimmunoblastic lymphadenopathy (AILD) is a systemic disease clinically characterized by fever, generalized lymphadenopathy, hepatosplenomegaly, polyclonal gamma-globulinemia and Cooms' positive hemolytic anemia. The lymph node in AILD reveals a polymorphic feature consisting of a proliferation of small vessels, immunoblasts and plasma cells and acidophilic interstitial material. Progression into immunoblastic sarcoma is reported as high 35% of the patient with AILD. Nathwani et al have observed not only malignant transformation of AILD in sequential tissue examination, but also the coexistence of AILD and immunoblastic lymphoma in the same lymph node or at different sites in the same patient. Multiple clusters or islands of compactly arranged large lymphoid cells constitute the initial histologic evidence of immunoblastic sarcoma. Immunoblastic sarcoma is a large cell lymphoma conceptually related to transformed T-and B-lymphocytes of the extrafollicular compartment of the immune system, which proignosis is poor. We have recently experienced a case of immuno blastic sarcoma arising in angioimmunoblastic lymphadenopathy in a 24-year-old woman. She had history of multiple enlarged lymph nodes in the inguinal, axilla and supraclavicular areas. Previous lymph node biopsies revealed reactive change. Six month later, right axillary lymph node biopsy reveled AILD with focal clusters of immunoblasts. Subsequent lymph node biopsy at the same site revealed diffuse immunoblasic sarcoma, B-cell type. A case presentation with histologic findings and a brief review of literature were done.

Xanthogranulomatous Cholecystitis: 3 cases report.: Jae Hoon Park, Youn Wha Kim, Yong Koo Park, Ju Hie Lee, Moon Ho Yang; Korean J Pathol. 1991;25(1):41-44.

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Abstract PDF: Xanthogranulomatous cholecystitis is a rare form of inflammatory disease of the gall bladder and was first described in 1970 by Christensen and Ishak as fibroxanthogranulomatous inflammation of the gall bladder. Recently authors experienced three cases of xanthogranulomatous cholecystitis, two of which were erroneously diagnosed as malignant tumor in preoperative clinical and radiological examinations. Grossly, the gallbladders were enlarged and the walls were thickened with yellowish granular necrotic areas ranging from a few millimeters to 1.0 cm in diameter. Microscopically, all of three cases showed diffuse infiltration of the foamy histiocytes containing bile pigments and mononuclear leukocytes associated with fibroblastic proliferation and foreign body reactions. The pathogenesis of the xanthogranulomatous cholecystitis is uncertain, but opinion favours an inflammatory response to extravasated bile probably, from ruptured Rokitanky-Aschoff sinuses. Three cases of xanthogranulomatous cholecystitis with brief review of literature are presented.

A Sialoblastoma Associated with a Hepatoblastoma: An autopsy case report.: Sun Lee, Youn Wha Kim, Jae Hoon Park, Yong Koo Park, Ju hie Lee, Moon Ho Yang; Korean J Pathol. 1997;31(11):1222-1226.

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Abstract: Sialoblastoma is defined as a rare, congenital or perinatal, aggressive and potentially low-grade malignant, basaloid gland neoplasm that occurs in the major salivary glands. We report a case of a congenital sialoblastoma in the left parotid gland, associated with a hepatoblastoma in a female infant. At birth, a huge mass in the left neck and hepatomegaly were noted. Grossly, the neck mass was well-circumscribed, lobulated and gray tan. Microscopically, the tumor was composed of basaloid aggregates of primitive uniform cells with focal ductal differentiation. The liver showed a well-circumscribed gray tan tumor with extensive hemorrhage and cystic change. Microscopically, the liver revealed characteristic findings of hepatoblastoma. To the best of our knowledge, this is the first case of coexistence of a congenital sialoblastoma and a hepatoblastoma, reported in the literature.

Inflammatory Myofibroblastic Tumor of the Mesentery: A case report.: Sung Jig Lim, Gou Young Kim, Jae Hoon Park, Youn Wha Kim, Yong Koo Park, Ju Hie Lee, Moon Ho Yang; Korean J Pathol. 1999;33(9):729-732.

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Abstract PDF: Inflammatory myofibroblastic tumor or inflammatory pseudotumor is characterized by spindle cell proliferation with inflammatory cell infiltration, predominantly plasma cells and lymphocytes. We have experienced a case of inflammatory myofibroblastic tumor of the mesentery in a 57-year-old male patient with intermittent abdominal pain. On computer tomography, a well demarcated mass was seen in the mesenteric side of the ascending colon. Right hemicolectomy was performed under the impression of the metastatic tumor of lymph nodes. Grossly, a rather well-circumscribed gray white mass was noted in the mesentery of the ascending colon. Microscopically, the lesion consisted of plump spindle cells and accompanying inflammatory cellular infiltrates. The spindle cells were positive for vimentin.

Fine Needle Aspiration Cytology of the Intraductal Papillary Mucinous Tumor of the Pancreas: A Case Report.: In Gu Do, Jae Hoon Park, Youn Wha Kim, Ju Hie Lee, Moon Ho Yang, Sung Wha Hong, Yong Koo Park; J Pathol Transl Med. 2003;14(2):91-95.

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Abstract PDF: Intraductal papillary mucinous tumor of the pancreas is characterized by intraductal papillary proliferation of mucin-producing epithelial cells with or without excessive mucin secretion. According to the degree of epithelial dysplasia, intraductal papillary mucinous tumor is classified into adenoma, borderline tumor, and carcinoma. We recently experienced a case of fine needle aspiration cytology of the intraductal papillary mucinous adenoma in a 69-year-old male. The fine needle aspiration cytology yielded flat sheets of columnar, mucin containing epithelial cells in the background of dense mucin containing degenerated cellular material and histiocytes.

Bilateral Bartholin's Gland Hyperplasia Associated with Bartholin's Gland Cyst: A Brief Case Report.: Hyun Soo Kim, Gou Young Kim, Sung Jig Lim, Eun Hee You, Youn Wha Kim; Korean J Pathol. 2008;42(5):314-316.

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Abstract PDF: A 40-year-old woman underwent surgery to remove tender bilateral vulvar masses. The masses were gray/brown, well circumscribed, non-encapsulated, and were composed of an increased number of ducts and acini with a normal lobular architecture and a duct-acinar relationship. This appearance was consistent with Bartholin's gland hyperplasia (BGH). Bilateral Bartholin's gland cysts were also associated with BGH. Benign tumors and tumor-like conditions of Bartholin's gland are uncommon, and only a few cases of BGH have been reported in the literature. Hyperplasia is a rare etiology for an enlarged Bartholin's gland, and must be distinguished histologically from adenoma.

Hybrid Cyst Coexisting with Glomus Coccygeum.: Hyun Soo Kim, Gou Young Kim, Sung Jig Lim, Youn Wha Kim; Korean J Pathol. 2008;42(5):323-326.

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Abstract PDF: A 36-year-old female patient with a mass in the coccygeal region underwent surgical removal of the mass, and this revealed a hybrid cyst in coexistence with a glomus coccygeum. This unusual cutaneous cyst had an epithelial lining composed of keratinizing, stratified squamous epithelium with an intact granular layer immediately adjacent to apocrine cells, and the apocrine cells showed the characteristic features of "decapitation secretion". The glomus coccygeum, which is a minor finding in specimens from the sacral area and it may represent a diagnostic challenge to the unaware observer, was incidentally identified in the dermis. The glomus coccygeum was located beneath the epithelial transition area of the hybrid cyst. Immunohistochemical analysis revealed that the cytoplasm of the epithelioid glomus cells was positive for smooth muscle actin, and these epithelioid glomus cells were arranged in concentric layers around blood vessels, and the cellular stroma surrounding the glomus bodies were positive for S-100 protein.

Cystic Meningioma: A case report.: Jae Hoon Park, So Yeon Yu, Youn Wha Kim, Yong Koo Park, Moon Ho Yang; Korean J Pathol. 1991;25(2):153-157.

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Abstract PDF: Meningiomas are usually thought of as firm solid tumors and most standard references make no mention of cystic meningiomas. Although several cases of cystic meningioma have been reported in the literature and their neuroradiological features discussed, the rarity of this entity makes its preoperative diagnosis difficult. Recently, the authors encountered a case of cystic meningioma, which was thought as ependymal cyst or infarction, preoperatively. In this report the authors discussed its clinical, neuroradiological and pathological characteristics with brief reviews of the literature.

Inflammatory Pseudotumor of the Liver: A case report.: Young Hee Maeng, Jae Hoon Park, Youn Wha Kim, Yong Koo Park, Ju Hie Lee, Moon Ho Yang; Korean J Pathol. 1994;28(1):90-92.

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Abstract PDF: Inflammatory pseudotumor of the Aver is a rare benign lesion that usually has been discovered at laparotomy. This lesion is inflamrhatory and reactive, but the etiology remains unknown. In-flammatory pseudotumor of the liver is of the interest not only because of its rarity also because it needs to be clinically differentiated from hepatocellular carcinoma and other malignant tu-mors. In this report, we describe a case of inflammatory pseudotumor of the liver with fever and weight loss in a 46-year-old male. Grossly, the lesion showed a rather well demarcated, gray white to pale yellowish nodular mass mesuring 7 x 5.5 x 5 cm in dimensions. M icroscqpically, the tumor was composed of diffuse infiltration of predominantly plasma cells, lymphocytes and histocytes associated with fibroblastic proliferation.

Two Cases of Black Adenoma of the Adrenal Cortex Associated with Cushing's Syndrome.: So Yeon Yu, Youn Wha Kim, Yong Koo Park, Ju Hie Lee, Moon Ho Yang; Korean J Pathol. 1991;25(3):245-249.

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Abstract PDF: Black adenoma is known to be a rare variant of adrenal cortical adenoma containing characteristic abundant lipofuscin pigments in the cytoplasm. Almost all of them are nonfunctioning and only occasionally they are associated with Cushing's syndrome or primary hyperaldosteronism. We present two cases of black cortical adenoma of the adrenal gland associated with Cushing's syndrome in a 24-year-old woman and a 64-year-old man. This report dealt with clinical and pathologic presentation including ultrastructural identification of lipofuscin pigment.

Original Article

Expression of the GLUT1 and p53 Protein in Atypical Mucosal Lesions Obtained from Gastric Biopsy Specimens.: In Gu Do, Youn Wha Kim, Yong Koo Park; Korean J Pathol. 2006;40(1):32-38.

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Abstract PDF: BACKGROUND
The diagnosis of atypical mucosal lesions by performing hematoxylin-eosin staining is too subjective, and it is also subject to considerable inter-observer variation. There is a need for reliable immunohistochemical markers that can give reproducible results and that are not subject to individual interpretation.
METHODS
We reviewed a total of 199 cases of gastric biopsy specimens, which were all diagnosed as atypical mucosal lesions, and 124 cases of the adenocarcinomas specimens had been classified from category 1 (C1) to C5 according to the Vienna classification. We also examined the immunohistochemical expressions of the glucose transporter GLUT1 and the p53 protein in the gastric biopsy specimens to determine if they were useful markers for differentiatial diagnosis under the Vienna classifications.
RESULTS
None of the specimens in categories C1 to C3 showed GLUT1 expression, but 10.1% of the C4 specimens and 25.0% of the C5 specimens were GLUT1-positive (p<0.05). The expression of p53 was undetectable in the C1 specimens, but this was expressed in 2.9% of the C2 specimens, 15.6% of the C3 specimens, 37.8% of the C4 specimens, and 65.3% of the C5 specimens (p<0.05).
CONCLUSIONS
The Vienna classification is very applicable to the gastric biopsy specimens of the atypical mucosal lesions, and the GLUT1 and p53 expressions are candidates as highly useful markers to differentiate the Vienna C4 lesions from the C3 and C5 lesions.

Case Reports

Cytopathology of Hurthle Cell Adenoma: A Cese Report by Fine Needle Aspiration.: Bohng Hee Kim, Myoung Suk Kang, Jae Hoon Park, Youn Wha Kim, Yong Ku Park, Ju Hie Lee, Moon Ho Yang; J Pathol Transl Med. 1995;6(2):193-198.

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Abstract PDF: The increased use of thyroid fine needle aspiration (FNA) has refocused on Hurthle cell lesions. The cytologic diagnosis of Hurthle cell tumor is a challenge due to the presence of Hurthle cells in non-neoplastic lesions and the inability to differentiate between benign and malignant Hurthle cell tumor. We report a case of Hurthle cell adenoma(HCA) in a 68-year old woman, with reivew of the cytopathologic findings. FNA revealed losely cohesive or sheets of sheets of large oval to polygonal Hurthle cells containing bundant granular cytoplasm. The histopathologic examination confirmed the diagnosis of HCA with follicular growth pattern, Ultrastructurally, the cytoplasm was packed with variable sized mitochondria.

Cytologic Features of Papnicolaou Smears of Malignant Melanoma Arising in Vagina: A Cese Report.: Myung Suk Kang, Bohng Hee Kim, Jae Hoon Park, Youn Wha Kim, Yong Koo Park, Ju Hie Lee, Moon Ho Yang; J Pathol Transl Med. 1995;6(2):209-214.

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Abstract PDF: Primary malignant melanoma of vagina is a rare tumor which is easily misinterpretated in routine cytologic examination. We lately experienced a case of primary malignant melanoma of the vagina with direct cervical extension diagnosed by Pap smear. The cervicovaginal smear showed variable sized clusters of epithelial cells or singly scattered abnormal epithelial cells. Most of the tumor cells had round hyperchromatic nuclei with prominent nucleoli and brownish pigments in cytoplasm. The cytologic findings are compared with histologic features of resected specimen.

Original Article

A Standardized Pathology Report for Colorectal Cancer.: Hee Jin Chang, Cheol Keun Park, Woo Ho Kim, Young Bae Kim, Youn Wha Kim, Ho Guen Kim, Han Ik Bae, Kyu Sang Song, Mee Soo Chang, Hee Kyung Chang, Yang Seok Chae; Korean J Pathol. 2006;40(3):193-203.

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Abstract PDF: BACKGROUND
AND METHODS: For standardizing the pathology report and diagnosis of colorectal cancers, the Gastrointestinal Pathology Study Group of the Korean Society of Pathologists has developed a pathology reporting format for colorectal cancer in collaboration with the Korean Society of Coloproctology.
RESULTS
The diagnostic parameters are divided into two parts: the standard part and the optional part. The standard part contains most of the items listed in the Japanese classification, the TNM classification by AJCC, and the WHO classification. We included detailed descriptions on each item.
CONCLUSIONS
The standardized pathology report for colorectal cancers is adequate for its application to routine surgical pathology reports, and it is also helpful to decrease the discrepancies that occur during the pathologic diagnosis of colorectal cancer. Furthermore, this reporting format could encourage nationwide multi-center collaborative studies.

Case Report

Bizarre Parosteal Osteochondromatous Proliferation: A report of five cases.: Bohng Hee Kim, Yong Koo Park, Youn Wha Kim, Moon Ho Yang; Korean J Pathol. 1996;30(8):733-738.

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Abstract PDF: Bizarre parosteal osteochondromatous proliferation was first described in 1983, when Nora and his collegues reported 35 examples of a proliferative lesion involving bones of the hands and the feet. In 1993, Meneses reported 65 cases of this condition. A fourth of all the reported cases involved the long bones. It is important to identify the clinical, roentgenographic, and histologic characteristic to seperate it from other entities because it is a benign lesion with atypical microscopic features with a tendency to recur. Roentgenograms show a calcific mass attached to the underlying cortex having a broad base. Histologically, the lesion exhibites proliferative activity, irregular bony cartilaginous interfaces, and enlarged, bizarre, and binucleated chondrocytes. We reviewed the bone tumors, diagnosed in the KyungHee University Hospital, dated from 1984 to 1994. Five cases were revised to Nora's lesion, all of which were previously diagnosed as osteochondroma. The ages of the patients ranged from 12 to 57 years (median, 19 years), and all of them were males. Two cases involved the bones of hands and feet (metacarpal and talus), and 3 cases involved the long bones (humerus, fibula, and ulna). One lesion involving the humerus has a recurrence. No metastasis had been reported.

Original Articles

Diagnostic Value of Urine Cytology in 236 cases; a Comparison of Liquid-Based Preparation and Conventional Cytospin Method.: Sun Lee, Jung Hee Park, Sung Im Do, Youn Wha Kim, Juhie Lee, Sung Gu Chang, Yong Koo Park; J Pathol Transl Med. 2007;18(2):119-125.

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Abstract PDF: Urine cytology is an important screening tool for urinary tract neoplasms. Liquid-based preparation methods, such as ThinPrep(R), have been introduced for non-gynecological samples. We aimed to assess the diagnostic accuracy of liquid-based preparations in urine cytology by comparing the results of the conventional Cytospin preparation method for the same samples. A total of 236 cases subject to urine cytology were enrolled in this study from January 2005 to December 2005. All cases were subjected to cystoscopy and if a malignancy was suspected, a biopsy was performed. Urine cytology slides were made using the ThinPrep(R) preparation method and the conventional Cytospin and/or direct smear method from the individual samples. The results of urine cytology were compared with the final cystoscopic or histological diagnoses. We analyzed the sensitivity, specificity, positive predictive value, negative predictive value and accuracy of both cytology preparation methods. A total of 236 slides made using the liquid based method were satisfactory for slide quality, whereas 5 slides (2.1%) prepared by conventional methods were unsatisfactory because of air-drying, a thick smear, or a bloody or inflammatory background. The ThinPrep(R) method showed 53.1% sensitivity, 92.6% specificity, a 92.6% positive predictive value, a 94.1% negative predictive value and 85.6% accuracy, while the conventional method showed 51% sensitivity, 98.4% specificity, a 92.6% positive predictive value, a 98.4% negative predictive value and 88.6% accuracy. Although the diagnostic values were equivalent between the use of the two methods, the quality of the cytology slides and the time consumed during the microscopic examination for a diagnosis were superior for the ThinPrep(R) method than for the conventional method. In conclusion, our limited studies have shown that the use of the liquid based preparation method is beneficial to improve the quality of slides and reduce the duration for a microscopic examination, but did not show better sensitivity, accuracy and predictive values.

Pleural Effusion Cytology of the Metastatic Sex Cord Tumor With Annular Tubules.: Sun Lee, Ju Hie Lee, Youn Wha Kim, Yong Koo Park, Hak Soon Chang, Moon Ho Yang; J Pathol Transl Med. 1997;8(2):190-193.

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Abstract PDF: The sex cord tumor with annular tubules(SCTAT) is a rare ovarian neoplasm, which charateristically shows simple and complex annular tubules with central acidophilic hyaline bodies. This tumor has been considered as a tumor of low-grade malignancy with late recurrence. We presented a brief case report of metastatic SCTAT of ovary in pleural fluid from ovary with cytopathologic and clinical features. The cytologic features of differential diagnosis are discussed.

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