Journal of Pathology and Translational Medicine

Reviews

Clinical practice recommendations for the use of next-generation sequencing in patients with solid cancer: a joint report from KSMO and KSP: Miso Kim, Hyo Sup Shim, Sheehyun Kim, In Hee Lee, Jihun Kim, Shinkyo Yoon, Hyung-Don Kim, Inkeun Park, Jae Ho Jeong, Changhoon Yoo, Jaekyung Cheon, In-Ho Kim, Jieun Lee, Sook Hee Hong, Sehhoon Park, Hyun Ae Jung, Jin Won Kim, Han Jo Kim, Yongjun Cha, Sun Min Lim, Han Sang Kim, Choong-Kun Lee, Jee Hung Kim, Sang Hoon Chun, Jina Yun, So Yeon Park, Hye Seung Lee, Yong Mee Cho, Soo Jeong Nam, Kiyong Na, Sun Och Yoon, Ahwon Lee, Kee-Taek Jang, Hongseok Yun, Sungyoung Lee, Jee Hyun Kim, Wan-Seop Kim; Received September 15, 2023 Accepted November 1, 2023 Published online January 10, 2024; DOI: https://doi.org/10.4132/jptm.2023.11.01 [Epub ahead of print]

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Abstract PDF: In recent years, next-generation sequencing (NGS)–based genetic testing has become crucial in cancer care. While its primary objective is to identify actionable genetic alterations to guide treatment decisions, its scope has broadened to encompass aiding in pathological diagnosis and exploring resistance mechanisms. With the ongoing expansion in NGS application and reliance, a compelling necessity arises for expert consensus on its application in solid cancers. To address this demand, the forthcoming recommendations not only provide pragmatic guidance for the clinical use of NGS but also systematically classify actionable genes based on specific cancer types. Additionally, these recommendations will incorporate expert perspectives on crucial biomarkers, ensuring informed decisions regarding circulating tumor DNA panel testing.

Noninvasive follicular thyroid neoplasm with papillary-like nuclear features: its updated diagnostic criteria, preoperative cytologic diagnoses and impact on the risk of malignancy: Hee Young Na, So Yeon Park; J Pathol Transl Med. 2022;56(6):319-325. Published online November 9, 2022; DOI: https://doi.org/10.4132/jptm.2022.09.29

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Due to the extremely indolent behavior, a subset of noninvasive encapsulated follicular variant papillary thyroid carcinomas has been classified as “noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP)” since 2016 and is no longer considered carcinoma. Since the introduction of this new terminology, changes and refinements have been made in diagnostic criteria. Initially, the incidence of NIFTP was estimated substantial. However, the reported incidence of NIFTP varies greatly among studies and regions, with higher incidence in North American and European countries than in Asian countries. Thus, the changes in the risk of malignancy (ROM) in the Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) differ inevitably among regions. Because more conservative surgery is recommended for NIFTPs, distinguishing NIFTPs from papillary thyroid carcinomas in preoperative fine-needle aspiration cytology became one of the major concerns. This review will provide comprehensive overview of updates on diagnostic criteria, actual incidence and preoperative cytologic diagnoses of NIFTP, and its impact on the ROM in TBSRTC.

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Papillae, psammoma bodies, and/or many nuclear pseudoinclusions are helpful criteria but should not be required for a definitive cytologic diagnosis of papillary thyroid carcinoma: An institutional experience of 207 cases with surgical follow up
Tarik M. Elsheikh, Matthew Thomas, Jennifer Brainard, Jessica Di Marco, Erica Manosky, Bridgette Springer, Dawn Underwood, Deborah J. Chute
Cancer Cytopathology.2024;[Epub] CrossRef
ThyroSeq overview on indeterminate thyroid nodules: An institutional experience
Sam Sirotnikov, Christopher C. Griffith, Daniel Lubin, Chao Zhang, Nabil F. Saba, Dehong Li, Amanda Kornfield, Amy Chen, Qiuying Shi
Diagnostic Cytopathology.2024;[Epub] CrossRef
Preoperative evaluation of thyroid nodules – Diagnosis and management strategies
Tapoi Dana Antonia, Lambrescu Ioana Maria, Gheorghisan-Galateanu Ancuta-Augustina
Pathology - Research and Practice.2023; 246: 154516. CrossRef
Reevaluating diagnostic categories and associated malignancy risks in thyroid core needle biopsy
Chan Kwon Jung
Journal of Pathology and Translational Medicine.2023; 57(4): 208. CrossRef
Strategies for Treatment of Thyroid Cancer
Deepika Yadav, Pramod Kumar Sharma, Rishabha Malviya, Prem Shankar Mishra
Current Drug Targets.2023; 24(5): 406. CrossRef
Identification of NIFTP-Specific mRNA Markers for Reliable Molecular Diagnosis of Thyroid Tumors
So-Yeon Lee, Jong-Lyul Park, Kwangsoon Kim, Ja Seong Bae, Jae-Yoon Kim, Seon-Young Kim, Chan Kwon Jung
Endocrine Pathology.2023; 34(3): 311. CrossRef

Original Article

A multicenter study of interobserver variability in pathologic diagnosis of papillary breast lesions on core needle biopsy with WHO classification: Hye Ju Kang, Sun Young Kwon, Ahrong Kim, Woo Gyeong Kim, Eun Kyung Kim, Ae Ree Kim, Chungyeul Kim, Soo Kee Min, So Young Park, Sun Hee Sung, Hye Kyoung Yoon, Ahwon Lee, Ji Shin Lee, Hyang Im Lee, Ho Chang Lee, Sung Chul Lim, Sun Young Jun, Min Jung Jung, Chang Won Jung, Soo Youn Cho, Eun Yoon Cho, Hye Jeong Choi, So Yeon Park, Jee Yeon Kim, In Ae Park, Youngmee Kwon; J Pathol Transl Med. 2021;55(6):380-387. Published online October 6, 2021; DOI: https://doi.org/10.4132/jptm.2021.07.29

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Abstract PDF Supplementary Material

Background
Papillary breast lesions (PBLs) comprise diverse entities from benign and atypical lesions to malignant tumors. Although PBLs are characterized by a papillary growth pattern, it is challenging to achieve high diagnostic accuracy and reproducibility. Thus, we investigated the diagnostic reproducibility of PBLs in core needle biopsy (CNB) specimens with World Health Organization (WHO) classification.
Methods
Diagnostic reproducibility was assessed using interobserver variability (kappa value, κ) and agreement rate in the pathologic diagnosis of 60 PBL cases on CNB among 20 breast pathologists affiliated with 20 medical institutions in Korea. This analysis was performed using hematoxylin and eosin (H&E) staining and immunohistochemical (IHC) staining for cytokeratin 5 (CK5) and p63. The pathologic diagnosis of PBLs was based on WHO classification, which was used to establish simple classifications (4-tier, 3-tier, and 2-tier).
Results
On WHO classification, H&E staining exhibited ‘fair agreement’ (κ = 0.21) with a 47.0% agreement rate. Simple classifications presented improvement in interobserver variability and agreement rate. IHC staining increased the kappa value and agreement rate in all the classifications. Despite IHC staining, the encapsulated/solid papillary carcinoma (EPC/SPC) subgroup (κ = 0.16) exhibited lower agreement compared to the non-EPC/SPC subgroup (κ = 0.35) with WHO classification, which was similar to the results of any other classification systems.
Conclusions
Although the use of IHC staining for CK5 and p63 increased the diagnostic agreement of PBLs in CNB specimens, WHO classification exhibited a higher discordance rate compared to any other classifications. Therefore, this result warrants further intensive consensus studies to improve the diagnostic reproducibility of PBLs with WHO classification.

Citations

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Invasive papillary carcinoma of the breast
Shijing Wang, Qingfu Zhang, Xiaoyun Mao
Frontiers in Oncology.2024;[Epub] CrossRef
Encapsulated papillary carcinoma of the breast: A single institution experience
Liang Xu, Qixin Mao, Qiuming Liu, Yufeng Gao, Lihua Luo, Chungen Guo, Wei Qu, Ningning Yan, Yali Cao
Oncology Letters.2023;[Epub] CrossRef
High-risk and selected benign breast lesions diagnosed on core needle biopsy: Evidence for and against immediate surgical excision
Aparna Harbhajanka, Hannah L. Gilmore, Benjamin C. Calhoun
Modern Pathology.2022; 35(11): 1500. CrossRef

Review

Standardized pathology report for breast cancer: Soo Youn Cho, So Yeon Park, Young Kyung Bae, Jee Yeon Kim, Eun Kyung Kim, Woo Gyeong Kim, Youngmee Kwon, Ahwon Lee, Hee Jin Lee, Ji Shin Lee, Jee Young Park, Gyungyub Gong, Hye Kyoung Yoon; J Pathol Transl Med. 2021;55(1):1-15. Published online January 11, 2021; DOI: https://doi.org/10.4132/jptm.2020.11.20

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Abstract PDF Supplementary Material

Given the recent advances in management and understanding of breast cancer, a standardized pathology report reflecting these changes is critical. To meet this need, the Breast Pathology Study Group of the Korean Society of Pathologists has developed a standardized pathology reporting format for breast cancer, consisting of ‘standard data elements,’ ‘conditional data elements,’ and a biomarker report form. The ‘standard data elements’ consist of the basic pathologic features used for prognostication, while other factors related to prognosis or diagnosis are described in the ‘conditional data elements.’ In addition to standard data elements, all recommended issues are also presented. We expect that this standardized pathology report for breast cancer will improve diagnostic concordance and communication between pathologists and clinicians, as well as between pathologists inter-institutionally.

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Residual pure intralymphatic carcinoma component only (lymphovascular tumor emboli without invasive carcinoma) after neoadjuvant chemotherapy is associated with poor outcome: Not pathologic complete response
Hyunwoo Lee, Yunjeong Jang, Yoon Ah Cho, Eun Yoon Cho
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Sentinel lymph node biopsy in patients with ductal carcinomain situ: systematic review and meta-analysis
Matthew G. Davey, Colm O’Flaherty, Eoin F. Cleere, Aoife Nohilly, James Phelan, Evan Ronane, Aoife J. Lowery, Michael J. Kerin
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Editorial

New insights into classification and risk stratification of encapsulated thyroid tumors with a predominantly papillary architecture: Chan Kwon Jung, So Yeon Park, Jang-Hee Kim, Kennichi Kakudo; J Pathol Transl Med. 2020;54(3):197-203. Published online May 14, 2020; DOI: https://doi.org/10.4132/jptm.2020.04.29

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The Asian Thyroid Working Group, from 2017 to 2023
Kennichi Kakudo, Chan Kwon Jung, Zhiyan Liu, Mitsuyoshi Hirokawa, Andrey Bychkov, Huy Gia Vuong, Somboon Keelawat, Radhika Srinivasan, Jen-Fan Hang, Chiung-Ru Lai
Journal of Pathology and Translational Medicine.2023; 57(6): 289. CrossRef
Updates in the Pathologic Classification of Thyroid Neoplasms: A Review of the World Health Organization Classification
Yanhua Bai, Kennichi Kakudo, Chan Kwon Jung
Endocrinology and Metabolism.2020; 35(4): 696. CrossRef

Reviews

Clinicopathological characteristics of BRCA-associated breast cancer in Asian patients: Eun-Kyu Kim, So Yeon Park, Sung-Won Kim; J Pathol Transl Med. 2020;54(4):265-275. Published online May 14, 2020; DOI: https://doi.org/10.4132/jptm.2020.04.07

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Abstract PDF

BRCA1/2 germline mutations account for the majority of hereditary breast cancers. Since the identification of the BRCA genes, several attempts have been made to define the clinicopathological characteristics of BRCA-associated breast cancer in comparison with sporadic breast cancer. Asians constitute 60% of the world population, and although the incidence of breast cancer in Asia remains low compared to the West, breast cancer is the most prevalent female cancer in the region. The epidemiological aspects of breast cancer are different between Asians and Caucasians. Asian patients present with breast cancer at a younger age than Western patients. The contributions of BRCA1/2 mutations to breast cancer incidence are expected to differ between Asians and Caucasians, and the different genetic backgrounds among races are likely to influence the breast cancer phenotypes. However, most large-scale studies on the clinicopathological characteristics of BRCA-associated breast cancer have been on Western patients, while studies on Asian populations were small and sporadic. In this review, we provide an overview of the clinical and pathological characteristics of BRCA-associated breast cancer, incorporating findings on Asian patients.

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Prevalence and Factors Associated with BRCA1/2 Gene Mutation in Chinese Populations with Breast Cancer
Guoding Huang, Hongquan Lu, Qizhu Chen, Xinting Huang
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Changing Patterns in Clinicopathological Characteristics of Breast Cancer and Prevalence of BRCA Mutations: Analysis in a Rural Area of Southern China
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HER2 status in breast cancer: changes in guidelines and complicating factors for interpretation: Soomin Ahn, Ji Won Woo, Kyoungyul Lee, So Yeon Park; J Pathol Transl Med. 2020;54(1):34-44. Published online November 6, 2019; DOI: https://doi.org/10.4132/jptm.2019.11.03

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Abstract PDF

Human epidermal growth factor receptor 2 (HER2) protein overexpression and/or HER2 gene amplification is found in about 20% of invasive breast cancers. It is a sole predictive marker for treatment benefits from HER2 targeted therapy and thus, HER2 testing is a routine practice for newly diagnosed breast cancer in pathology. Currently, HER2 immunohistochemistry (IHC) is used for a screening test, and in situ hybridization is used as a confirmation test for HER2 IHC equivocal cases. Since the American Society of Clinical Oncology (ASCO)/College of American Pathologists (CAP) guidelines on HER2 testing was first released in 2007, it has been updated to provide clear instructions for HER2 testing and accurate determination of HER2 status in breast cancer. During HER2 interpretation, some pitfalls such as intratumoral HER2 heterogeneity and increase in chromosome enumeration probe 17 signals may lead to inaccurate assessment of HER2 status. Moreover, HER2 status can be altered after neoadjuvant chemotherapy or during metastatic progression, due to biologic or methodologic issues. This review addresses recent updates of ASCO/CAP guidelines and factors complicating in the interpretation of HER2 status in breast cancers.

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Original Articles

A Multi-institutional Study of Prevalence and Clinicopathologic Features of Non-invasive Follicular Thyroid Neoplasm with Papillary-like Nuclear Features (NIFTP) in Korea: Ja Yeong Seo, Ji Hyun Park, Ju Yeon Pyo, Yoon Jin Cha, Chan Kwon Jung, Dong Eun Song, Jeong Ja Kwak, So Yeon Park, Hee Young Na, Jang-Hee Kim, Jae Yeon Seok, Hee Sung Kim, Soon Won Hong; J Pathol Transl Med. 2019;53(6):378-385. Published online October 21, 2019; DOI: https://doi.org/10.4132/jptm.2019.09.18

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304 Download
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13 Crossref

Abstract PDF

Background
In the present multi-institutional study, the prevalence and clinicopathologic characteristics of non-invasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP) were evaluated among Korean patients who underwent thyroidectomy for papillary thyroid carcinoma (PTC).
Methods
Data from 18,819 patients with PTC from eight university hospitals between January 2012 and February 2018 were retrospectively evaluated. Pathology reports of all PTCs and slides of potential NIFTP cases were reviewed. The strict criterion of no papillae was applied for the diagnosis of NIFTP. Due to assumptions regarding misclassification of NIFTP as non-PTC tumors, the lower boundary of NIFTP prevalence among PTCs was estimated. Mutational analysis for BRAF and three RAS isoforms was performed in 27 randomly selected NIFTP cases.
Results
The prevalence of NIFTP was 1.3% (238/18,819) of all PTCs when the same histologic criteria were applied for NIFTP regardless of the tumor size but decreased to 0.8% (152/18,819) when tumors ≥1 cm in size were included. The mean follow-up was 37.7 months and no patient with NIFTP had evidence of lymph node metastasis, distant metastasis, or disease recurrence during the follow-up period. A difference in prevalence of NIFTP before and after NIFTP introduction was not observed. BRAF^V600E mutation was not found in NIFTP. The mutation rate for the three RAS genes was 55.6% (15/27).
Conclusions
The low prevalence and indolent clinical outcome of NIFTP in Korea was confirmed using the largest number of cases to date. The introduction of NIFTP may have a small overall impact in Korean practice.

Citations

Citations to this article as recorded by

Analysis of a pre-2017 follicular variant papillary thyroid carcinoma cohort reclassified as noninvasive follicular thyroid neoplasm with papillary-like features (NIFTP): an 11-year retrospective single institution experience
Shaham Beg, Sana Irfan Khan, Isabella Cui, Theresa Scognamiglio, Rema Rao
Journal of the American Society of Cytopathology.2023; 12(2): 112. CrossRef
Noninvasive Follicular Thyroid Neoplasm With Papillary-Like Nuclear Features: What a Surgeon Should Know
Jabir Alharbi, Thamer Alraddadi, Haneen Sebeih, Mohammad A Alessa, Haddad H Alkaf, Ahmed Bahaj, Sherif K Abdelmonim
Cureus.2023;[Epub] CrossRef
NTRK Fusion in a Cohort of BRAF p. V600E Wild-Type Papillary Thyroid Carcinomas
Seung Eun Lee, Mi-Sook Lee, Heejin Bang, Mi Young Kim, Yoon-La Choi, Young Lyun Oh
Modern Pathology.2023; 36(8): 100180. CrossRef
A Comprehensive Study on the Diagnosis and Management of Noninvasive Follicular Thyroid Neoplasm with Papillary-Like Nuclear Features
Bayan A. Alzumaili, Lauren N. Krumeich, Reagan Collins, Timothy Kravchenko, Emad I. Ababneh, Adam S. Fisch, William C. Faquin, Vania Nosé, Maria Martinez-Lage, Gregory W. Randolph, Rajshri M. Gartland, Carrie C. Lubitz, Peter M. Sadow
Thyroid.2023; 33(5): 566. CrossRef
Clinical-Pathological and Molecular Evaluation of 451 NIFTP Patients from a Single Referral Center
Paola Vignali, Agnese Proietti, Elisabetta Macerola, Anello Marcello Poma, Liborio Torregrossa, Clara Ugolini, Alessio Basolo, Antonio Matrone, Teresa Rago, Ferruccio Santini, Rossella Elisei, Gabriele Materazzi, Fulvio Basolo
Cancers.2022; 14(2): 420. CrossRef
Noninvasive follicular thyroid neoplasm with papillary-like nuclear features: its updated diagnostic criteria, preoperative cytologic diagnoses and impact on the risk of malignancy
Hee Young Na, So Yeon Park
Journal of Pathology and Translational Medicine.2022; 56(6): 319. CrossRef
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Kennichi Kakudo
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Clinicopathological parameters for predicting non-invasive follicular thyroid neoplasm with papillary features (NIFTP)
Eunju Jang, Kwangsoon Kim, Chan Kwon Jung, Ja Seong Bae, Jeong Soo Kim
Therapeutic Advances in Endocrinology and Metabolism.2021; 12: 204201882110005. CrossRef
The Incidence of Noninvasive Follicular Thyroid Neoplasm with Papillary-Like Nuclear Features: A Meta-Analysis Assessing Worldwide Impact of the Reclassification
Chanchal Rana, Huy Gia Vuong, Thu Quynh Nguyen, Hoang Cong Nguyen, Chan Kwon Jung, Kennichi Kakudo, Andrey Bychkov
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Amandeep Singh, Jeehoon Ham, Joseph William Po, Navin Niles, Tara Roberts, Cheok Soon Lee
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Noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP) is rare, benign lesion using modified stringent diagnostic criteria: Reclassification and outcome study
David Cubero Rego, Hwajeong Lee, Anne Boguniewicz, Timothy A. Jennings
Annals of Diagnostic Pathology.2020; 44: 151439. CrossRef
Noninvasive Follicular Thyroid Neoplasm with Papillary-Like Nuclear Features: From Echography to Genetic Profile
Francesca Maletta, Enrico Costantino Falco, Alessandro Gambella, Jasna Metovic, Mauro Papotti
The Tohoku Journal of Experimental Medicine.2020; 252(3): 209. CrossRef

Cytologic Diagnosis of Noninvasive Follicular Thyroid Neoplasm with Papillary-like Nuclear Features and Its Impact on the Risk of Malignancy in the Bethesda System for Reporting Thyroid Cytopathology: An Institutional Experience: Milim Kim, Joung Eun Kim, Hyun Jeong Kim, Yul Ri Chung, Yoonjin Kwak, So Yeon Park; J Pathol Transl Med. 2018;52(3):171-178. Published online April 3, 2018; DOI: https://doi.org/10.4132/jptm.2018.04.03

8,935 View
197 Download
23 Web of Science
18 Crossref

Abstract PDF

Background
This study was performed to analyze cytologic diagnosis of noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP) and its impact on the risk of malignancy (ROM) in the Bethesda System for Reporting Thyroid Cytopathology (TBSRTC).
Methods
Five thousand five hundred and forty-nine cases of thyroid fine-needle aspiration cytology (FNAC) diagnosed between 2012 and 2014 were included in this study. Diagnostic categories based on TBSRTC were compared with final surgical diagnoses, and the ROM in each category was calculated both when NIFTP was included in malignant lesions and when excluded from malignant lesions.
Results
Of the 5,549 thyroid FNAC cases, 1,891 cases underwent surgical resection. In final diagnosis, 1,700 cases were revealed as papillary thyroid carcinoma (PTC), and 25 cases were reclassified as NIFTP. The cytologic diagnoses of NIFTP were non-diagnostic in one, benign in five, atypia of undetermined significance (AUS) in 14, follicular neoplasm in two, and suspicious for malignancy in three cases. Collectively, NIFTP/encapsulated follicular variant of PTC (EFVPTC) were more frequently classified as benign, AUS, or follicular neoplasm and less frequently categorized as malignant compared to conventional PTCs. Exclusion of NIFTP from malignant diagnoses resulted in a slight decrease in malignancy rates in non-diagnostic, benign, AUS, follicular neoplasm, and suspicious for malignancy categories without any statistical significance.
Conclusions
The decrease in the ROM was not significant when NIFTP was excluded from malignant lesions. In thyroid FNACs, NIFTP/EFVPTCs were mostly classified into indeterminate categories. Therefore, it might be feasible to separate NIFTP/EFVPTC from conventional PTC on FNAC to guide clinicians to conservative management for patients with NIFTP/EFVPTC.

Citations

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Clinical and Translational Medicine.2024;[Epub] CrossRef
Cytological features of “Non-invasive follicular tumour with papillary like nuclear features” – A single institutional experience in India
K Amita, HB Rakshitha, M Sanjay, Prashantha Kalappa
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Detailed fine needle aspiration cytopathology findings of noninvasive follicular thyroid neoplasm with papillary‐like nuclear features with nuclear grading correlated to that of biopsy and Bethesda category and systematic review
Sevgiye Kaçar Özkara, Gupse Turan
Diagnostic Cytopathology.2023; 51(12): 758. CrossRef
Non-Invasive Follicular Thyroid Neoplasm with Papillary-Like Nuclear Features Is Not a Cytological Diagnosis, but It Influences Cytological Diagnosis Outcomes: A Systematic Review and Meta-Analysis
Elina Haaga, David Kalfert, Marie Ludvíková, Ivana Kholová
Acta Cytologica.2022; 66(2): 85. CrossRef
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Hee Young Na, So Yeon Park
Journal of Pathology and Translational Medicine.2022; 56(6): 319. CrossRef
Usage and Diagnostic Yield of Fine-Needle Aspiration Cytology and Core Needle Biopsy in Thyroid Nodules: A Systematic Review and Meta-Analysis of Literature Published by Korean Authors
Soon-Hyun Ahn
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The Use of the Bethesda System for Reporting Thyroid Cytopathology in Korea: A Nationwide Multicenter Survey by the Korean Society of Endocrine Pathologists: Mimi Kim, Hyo Jin Park, Hye Sook Min, Hyeong Ju Kwon, Chan Kwon Jung, Seoung Wan Chae, Hyun Ju Yoo, Yoo Duk Choi, Mi Ja Lee, Jeong Ja Kwak, Dong Eun Song, Dong Hoon Kim, Hye Kyung Lee, Ji Yeon Kim, Sook Hee Hong, Jang Sihn Sohn, Hyun Seung Lee, So Yeon Park, Soon Won Hong, Mi Kyung Shin; J Pathol Transl Med. 2017;51(4):410-417. Published online June 14, 2017; DOI: https://doi.org/10.4132/jptm.2017.04.05

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Abstract PDF

Background
The Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) has standardized the reporting of thyroid cytology specimens. The objective of the current study was to evaluate the nationwide usage of TBSRTC and assess the malignancy rates in each category of TBSRTC in Korea.
Methods
Questionnaire surveys were used for data collection on the fine needle aspiration (FNA) of thyroid nodules at 74 institutes in 2012. The incidences and follow-up malignancy rates of each category diagnosed from January to December, 2011, in each institute were also collected and analyzed.
Results
Sixty out of 74 institutes answering the surveys reported the results of thyroid FNA in accordance with TBSRTC. The average malignancy rates for resected cases in 15 institutes were as follows: nondiagnostic, 45.6%; benign, 16.5%; atypical of undetermined significance, 68.8%; suspicious for follicular neoplasm (SFN), 30.2%; suspicious for malignancy, 97.5%; malignancy, 99.7%.
Conclusions
More than 80% of Korean institutes were using TBSRTC as of 2012. All malignancy rates other than the SFN and malignancy categories were higher than those reported by other countries. Therefore, the guidelines for treating patients with thyroid nodules in Korea should be revisited based on the malignancy rates reported in this study.

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Case Study

Mammary Carcinoma Arising in Microglandular Adenosis: A Report of Five Cases: Mimi Kim, Milim Kim, Yul Ri Chung, So Yeon Park; J Pathol Transl Med. 2017;51(4):422-427. Published online April 4, 2017; DOI: https://doi.org/10.4132/jptm.2016.11.11

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Abstract PDF

Mammary carcinoma arising in microglandular adenosis (MGA) is extremely rare, and MGA is regarded as a non-obligate precursor of triple-negative breast cancer. We report five cases of carcinoma arising in MGA of the breast. All cases showed a spectrum of proliferative lesions ranging from MGA to atypical MGA, ductal carcinoma in situ or invasive carcinoma. Immunohistochemically, all cases were triple-negative and expression of S-100 protein gradually decreased as the lesions progressed from MGA to atypical MGA and carcinoma. Three cases showed acinic cell differentiation with reactivity to α1-antitrypsin, and one case was metaplastic carcinoma. During clinical follow-up, one patient developed local recurrence. Carcinoma arising in MGA is a rare but distinct subset of triple-negative breast cancer with characteristic histologic and immunohistochemical findings.

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Original Article

Interobserver Variability of Ki-67 Measurement in Breast Cancer: Yul Ri Chung, Min Hye Jang, So Yeon Park, Gyungyub Gong, Woo-Hee Jung, The Korean Breast Pathology Ki- Study Group; J Pathol Transl Med. 2016;50(2):129-137. Published online February 15, 2016; DOI: https://doi.org/10.4132/jptm.2015.12.24

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Abstract PDF

Background
As measurement of Ki-67 proliferation index is an important part of breast cancer diagnostics, we conducted a multicenter study to examine the degree of concordance in Ki-67 counting and to find factors that lead to its variability. Methods: Thirty observers from thirty different institutions reviewed Ki-67–stained slides of 20 different breast cancers on whole sections and tissue microarray (TMA) by online system. Ten of the 20 breast cancers had hot spots of Ki-67 expression. Each observer scored Ki-67 in two different ways: direct counting (average vs. hot spot method) and categorical estimation. Intraclass correlation coefficient (ICC) of Ki-67 index was calculated for comparative analysis. Results: For direct counting, ICC of TMA was slightly higher than that of whole sections using average method (0.895 vs 0.858). The ICC of tumors with hot spots was lower than that of tumors without (0.736 vs 0.874). In tumors with hot spots, observers took an additional counting from the hot spot; the ICC of whole sections using hot spot method was still lower than that of TMA (0.737 vs 0.895). In categorical estimation, Ki-67 index showed a wide distribution in some cases. Nevertheless, in tumors with hot spots, the range of distribution in Ki-67 categories was decreased with hot spot method and in TMA platform. Conclusions: Interobserver variability of Ki-67 index for direct counting and categorical estimation was relatively high. Tumors with hot spots showed greater interobserver variability as opposed to those without, and restricting the measurement area yielded lower interobserver variability.

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Review

Pathology Reporting of Thyroid Core Needle Biopsy: A Proposal of the Korean Endocrine Pathology Thyroid Core Needle Biopsy Study Group: Chan Kwon Jung, Hye Sook Min, Hyo Jin Park, Dong Eun Song, Jang Hee Kim, So Yeon Park, Hyunju Yoo, Mi Kyung Shin, Korean Endocrine Pathology Thyroid Core Needle Biopsy Study Group; J Pathol Transl Med. 2015;49(4):288-299. Published online June 17, 2015; DOI: https://doi.org/10.4132/jptm.2015.06.04

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Abstract PDF

In recent years throughout Korea, the use of ultrasound-guided core needle biopsy (CNB) has become common for the preoperative diagnosis of thyroid nodules. However, there is no consensus on the pathology reporting system for thyroid CNB. The Korean Endocrine Pathology Thyroid Core Needle Biopsy Study Group held a conference on thyroid CNB pathology and developed guidelines through contributions from the participants. This article discusses the outcome of the discussions that led to a consensus on the pathology reporting of thyroid CNB.

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Ultrasonographic characteristics of medullary thyroid carcinoma according to nodule size: application of the Korean Thyroid Imaging Reporting and Data System and American Thyroid Association guidelines
Soo Yeon Hahn, Jung Hee Shin, Young Lyun Oh, Ko Woon Park
Acta Radiologica.2021; 62(4): 474. CrossRef
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Yu-Mee Sohn, Dong Gyu Na, Wooyul Paik, Hye Yun Gwon, Byeong-Joo Noh
Ultrasonography.2021; 40(1): 115. CrossRef
Assessing the diagnostic performance of thyroid biopsy with recommendations for appropriate interpretation
Su Min Ha, Jung Hwan Baek, Dong Gyu Na, Chan-Kwon Jung, Chong Hyun Suh, Young Kee Shong, Tae Yon Sung, Dong Eun Song, Jeong Hyun Lee
Ultrasonography.2021; 40(2): 228. CrossRef
Usage and Diagnostic Yield of Fine-Needle Aspiration Cytology and Core Needle Biopsy in Thyroid Nodules: A Systematic Review and Meta-Analysis of Literature Published by Korean Authors
Soon-Hyun Ahn
Clinical and Experimental Otorhinolaryngology.2021; 14(1): 116. CrossRef
Comparison of the Efficacy and Safety of the American Thyroid Association Guidelines and American College of Radiology TI-RADS
Jinghua Liu, Yajun Guo, Jiangxi Xiao, Luzeng Chen, Zhenwei Liang
Endocrine Practice.2021; 27(7): 661. CrossRef
Malignancy Rate of Bethesda Class III Thyroid Nodules Based on the Presence of Chronic Lymphocytic Thyroiditis in Surgical Patients
Yoon Young Cho, Yun Jae Chung, Hee Sung Kim
Frontiers in Endocrinology.2021;[Epub] CrossRef
Efficacy of Differential Diagnosis of Thyroid Nodules by Shear Wave Elastography—the Stiffness Map
Myung Hi Yoo, Hye Jeong Kim, In Ho Choi, Suyeon Park, Sumi Yun, Hyeong Kyu Park, Dong Won Byun, Kyoil Suh
Journal of the Endocrine Society.2021;[Epub] CrossRef
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Sae Rom Chung, Jung Hwan Baek, Young Jun Choi, Tae-Yon Sung, Dong Eun Song, Tae Yong Kim, Jeong Hyun Lee
Acta Radiologica.2020; 61(5): 620. CrossRef
Concordance of Three International Guidelines for Thyroid Nodules Classified by Ultrasonography and Diagnostic Performance of Biopsy Criteria
Younghee Yim, Dong Gyu Na, Eun Ju Ha, Jung Hwan Baek, Jin Yong Sung, Ji-hoon Kim, Won-Jin Moon
Korean Journal of Radiology.2020; 21(1): 108. CrossRef
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Chan Kwon Jung, Jung Hwan Baek, Dong Gyu Na, Young Lyun Oh, Ka Hee Yi, Ho-Cheol Kang
Journal of Pathology and Translational Medicine.2020; 54(1): 64. CrossRef
Core-Needle Biopsy Does Not Show Superior Diagnostic Performance to Fine-Needle Aspiration for Diagnosing Thyroid Nodules
Ilah Shin, Eun-Kyung Kim, Hee Jung Moon, Jung Hyun Yoon, Vivian Youngjean Park, Si Eun Lee, Hye Sun Lee, Jin Young Kwak
Yonsei Medical Journal.2020; 61(2): 161. CrossRef
Ultrasound‐guided fine‐needle aspiration or core needle biopsy for diagnosing follicular thyroid carcinoma?
Ko Woon Park, Jung Hee Shin, Soo Yeon Hahn, Young Lyun Oh, Sun Wook Kim, Tae Hyuk Kim, Jae Hoon Chung
Clinical Endocrinology.2020; 92(5): 468. CrossRef
Distribution and malignancy risk of six categories of the pathology reporting system for thyroid core-needle biopsy in 1,216 consecutive thyroid nodules
Hye Min Son, Ji-hoon Kim, Soo Chin Kim, Roh-Eul Yoo, Jeong Mo Bae, Hyobin Seo, Dong Gyu Na
Ultrasonography.2020; 39(2): 159. CrossRef
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Wooyul Paik, Dong Gyu Na, Hye Yun Gwon, Jinna Kim
Ultrasonography.2020; 39(2): 130. CrossRef
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Na Rae Kim, Jae Yeon Seok, Yoo Seung Chung, Joon Hyop Lee, Dong Hae Chung
Journal of Pathology and Translational Medicine.2020; 54(2): 171. CrossRef
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Soo Yeon Hahn, Jung Hee Shin, Young Lyun Oh, Ko Woon Park, Yaeji Lim
Scientific Reports.2020;[Epub] CrossRef
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Hye Yun Gwon, Dong Gyu Na, Byeong-Joo Noh, Wooyul Paik, So Jin Yoon, Soo-Jung Choi, Dong Rock Shin
Korean Journal of Radiology.2020; 21(5): 605. CrossRef
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Min Ji Hong, Dong Gyu Na, Hunkyung Lee
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Ji-hoon Kim
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Cytopathologic criteria and size should be considered in comparison of fine-needle aspiration vs. core-needle biopsy for thyroid nodules: results based on large surgical series
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Endocrine.2020; 70(3): 558. CrossRef
Preoperative diagnostic categories of fine needle aspiration cytology for histologically proven thyroid follicular adenoma and carcinoma, and Hurthle cell adenoma and carcinoma: Analysis of cause of under- or misdiagnoses
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Korean Journal of Radiology.2019; 20(1): 158. CrossRef
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Sylvia L. Asa
Endocrinology and Metabolism Clinics of North America.2019; 48(1): 1. CrossRef
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Hye-Seon Oh, Hyemi Kwon, Eyun Song, Min Ji Jeon, Tae Yong Kim, Jeong Hyun Lee, Won Bae Kim, Young Kee Shong, Ki-Wook Chung, Jung Hwan Baek, Won Gu Kim
Thyroid.2019; 29(5): 642. CrossRef
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Clinical and Experimental Otorhinolaryngology.2019; 12(2): 224. CrossRef
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Sae Rom Chung, Jung Hwan Baek, Jeong Hyun Lee, Yu-Mi Lee, Tae-Yon Sung, Ki-Wook Chung, Suck Joon Hong, Min Ji Jeon, Tae Yong Kim, Young Kee Shong, Won Bae Kim, Won Gu Kim, Dong Eun Song
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Hyo Jin Kim, Yeo Koon Kim, Jae Hoon Moon, June Young Choi, Sang Il Choi
Endocrine.2019; 65(2): 365. CrossRef
Does Radiofrequency Ablation Induce Neoplastic Changes in Benign Thyroid Nodules: A Preliminary Study
Su Min Ha, Jun Young Shin, Jung Hwan Baek, Dong Eun Song, Sae Rom Chung, Young Jun Choi, Jeong Hyun Lee
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Clinical Endocrinology.2018; 88(1): 96. CrossRef
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Annals of Diagnostic Pathology.2018; 32: 35. CrossRef
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Christoph F. Dietrich, Thomas Müller, Jörg Bojunga, Yi Dong, Giovanni Mauri, Maija Radzina, Manjiri Dighe, Xin-Wu Cui, Frank Grünwald, Andreas Schuler, Andre Ignee, Huedayi Korkusuz
Ultrasound in Medicine & Biology.2018; 44(1): 14. CrossRef
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Jooae Choe, Jung Hwan Baek, Hye Sun Park, Young Jun Choi, Jeong Hyun Lee
Acta Radiologica.2018; 59(8): 924. CrossRef
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Diagnostic Cytopathology.2018; 46(7): 561. CrossRef
Comparison of Immunohistochemistry and Direct Sanger Sequencing for Detection of theBRAFV600EMutation in Thyroid Neoplasm
Hye-Seon Oh, Hyemi Kwon, Suyeon Park, Mijin Kim, Min Ji Jeon, Tae Yong Kim, Young Kee Shong, Won Bae Kim, Jene Choi, Won Gu Kim, Dong Eun Song
Endocrinology and Metabolism.2018; 33(1): 62. CrossRef
Comparison of the Diagnostic Efficacy of Ultrasound‐Guided Core Needle Biopsy With 18‐ Versus 20‐Gauge Needles for Thyroid Nodules
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Impact of Nodule Size on Malignancy Risk Differs according to the Ultrasonography Pattern of Thyroid Nodules
Min Ji Hong, Dong Gyu Na, Jung Hwan Baek, Jin Yong Sung, Ji-Hoon Kim
Korean Journal of Radiology.2018; 19(3): 534. CrossRef
Web‐based thyroid imaging reporting and data system: Malignancy risk of atypia of undetermined significance or follicular lesion of undetermined significance thyroid nodules calculated by a combination of ultrasonography features and biopsy results
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Head & Neck.2018; 40(9): 1917. CrossRef
Thyroid Incidentalomas Detected on18F-Fluorodeoxyglucose Positron Emission Tomography with Computed Tomography: Malignant Risk Stratification and Management Plan
Sae Rom Chung, Young Jun Choi, Chong Hyun Suh, Hwa Jung Kim, Jong Jin Lee, Won Gu Kim, Tae Yon Sung, Yu-mi Lee, Dong Eun Song, Jeong Hyun Lee, Jung Hwan Baek
Thyroid.2018; 28(6): 762. CrossRef
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Sae Rom Chung, Chong Hyun Suh, Jung Hwan Baek, Young Jun Choi, Jeong Hyun Lee
European Radiology.2018; 28(11): 4909. CrossRef
The History of Korean Thyroid Pathology
Soon Won Hong, Chan Kwon Jung
International Journal of Thyroidology.2018; 11(1): 15. CrossRef
Ultrasonographic Echogenicity and Histopathologic Correlation of Thyroid Nodules in Core Needle Biopsy Specimens
Ji-hoon Kim, Dong Gyu Na, Hunkyung Lee
Korean Journal of Radiology.2018; 19(4): 673. CrossRef
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Soomin Ahn, Sejin Jung, Ji-Ye Kim, Jung Hee Shin, Soo Yeon Hahn, Young Lyun Oh
Korean Journal of Radiology.2018; 19(4): 656. CrossRef
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Min Ji Hong, Dong Gyu Na, Soo Jin Kim, Dae Sik Kim
Ultrasonography.2018; 37(3): 244. CrossRef
Active Surveillance of Low-Risk Papillary Thyroid Microcarcinoma: A Multi-Center Cohort Study in Korea
Hye-Seon Oh, Jeonghoon Ha, Hye In Kim, Tae Hyuk Kim, Won Gu Kim, Dong-Jun Lim, Tae Yong Kim, Sun Wook Kim, Won Bae Kim, Young Kee Shong, Jae Hoon Chung, Jung Hwan Baek
Thyroid.2018; 28(12): 1587. CrossRef
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Cytopathology.2017; 28(1): 65. CrossRef
Fine-needle aspiration versus core needle biopsy for diagnosis of thyroid malignancy and neoplasm: a matched cohort study
Soo-Yeon Kim, Hye Sun Lee, Jieun Moon, Eun-Kyung Kim, Hee Jung Moon, Jung Hyun Yoon, Jin Young Kwak
European Radiology.2017; 27(2): 801. CrossRef
Follicular variant of papillary thyroid carcinoma: comparison of ultrasound-guided core needle biopsy and ultrasound-guided fine needle aspiration in a multicentre study
Soo Yeon Hahn, Jung Hee Shin, Hyun Kyung Lim, So Lyung Jung
Clinical Endocrinology.2017; 86(1): 113. CrossRef
Core‐needle biopsy versus repeat fine‐needle aspiration for thyroid nodules initially read as atypia/follicular lesion of undetermined significance
Young Jun Choi, Jung Hwan Baek, Chong Hyun Suh, Woo Hyun Shim, Boseul Jeong, Jae Kyun Kim, Dong Eun Song, Tae Yong Kim, Ki‐Wook Chung, Jeong Hyun Lee
Head & Neck.2017; 39(2): 361. CrossRef
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Soo Yeon Hahn, Jung Hee Shin, Hyun Kyung Lim, So Lyung Jung, Young Lyun Oh, In Ho Choi, Chan Kwon Jung
Clinical Endocrinology.2017; 86(3): 444. CrossRef
Core Needle Biopsy of the Thyroid: 2016 Consensus Statement and Recommendations from Korean Society of Thyroid Radiology
Dong Gyu Na, Jung Hwan Baek, So Lyung Jung, Ji-hoon Kim, Jin Yong Sung, Kyu Sun Kim, Jeong Hyun Lee, Jung Hee Shin, Yoon Jung Choi, Eun Ju Ha, Hyun Kyung Lim, Soo Jin Kim, Soo Yeon Hahn, Kwang Hwi Lee, Young Jun Choi, Inyoung Youn, Young Joong Kim, Hye Sh
Korean Journal of Radiology.2017; 18(1): 217. CrossRef
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H.C. Kim, Y.J. Kim, H.Y. Han, J.M. Yi, J.H. Baek, S.Y. Park, J.Y. Seo, K.W. Kim
American Journal of Neuroradiology.2017; 38(2): 357. CrossRef
Ultrasound-Pathology Discordant Nodules on Core-Needle Biopsy: Malignancy Risk and Management Strategy
Sae Rom Chung, Jung Hwan Baek, Hye Sun Park, Young Jun Choi, Tae-Yon Sung, Dong Eun Song, Tae Yong Kim, Jeong Hyun Lee
Thyroid.2017; 27(5): 707. CrossRef
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Jung Hwan Baek
Ultrasonography.2017; 36(2): 83. CrossRef
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Min Ji Hong, Dong Gyu Na, Jung Hwan Baek, Jin Yong Sung, Ji-Hoon Kim
Thyroid.2017; 27(7): 953. CrossRef
Preoperative clinicopathological characteristics of patients with solitary encapsulated follicular variants of papillary thyroid carcinomas
Hyemi Kwon, Min Ji Jeon, Jong Ho Yoon, Suck Joon Hong, Jeong Hyun Lee, Tae Yong Kim, Young Kee Shong, Won Bae Kim, Won Gu Kim, Dong Eun Song
Journal of Surgical Oncology.2017; 116(6): 746. CrossRef
Active Surveillance for Patients With Papillary Thyroid Microcarcinoma: A Single Center’s Experience in Korea
Hyemi Kwon, Hye-Seon Oh, Mijin Kim, Suyeon Park, Min Ji Jeon, Won Gu Kim, Won Bae Kim, Young Kee Shong, Dong Eun Song, Jung Hwan Baek, Ki-Wook Chung, Tae Yong Kim
The Journal of Clinical Endocrinology & Metabolism.2017; 102(6): 1917. CrossRef
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Soon-Hyun Ahn, So-Yeon Park, Sang Il Choi
Endocrine Pathology.2017; 28(4): 332. CrossRef
Efficacy and safety of core-needle biopsy in initially detected thyroid nodules via propensity score analysis
Chong Hyun Suh, Jung Hwan Baek, Young Jun Choi, Tae Yong Kim, Tae Yon Sung, Dong Eun Song, Jeong Hyun Lee
Scientific Reports.2017;[Epub] CrossRef
Comparison of Core-Needle Biopsy and Fine-Needle Aspiration for Evaluating Thyroid Incidentalomas Detected by 18F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography: A Propensity Score Analysis
Chong Hyun Suh, Young Jun Choi, Jong Jin Lee, Woo Hyun Shim, Jung Hwan Baek, Han Cheol Chung, Young Kee Shong, Dong Eun Song, Tae Yon Sung, Jeong Hyun Lee
Thyroid.2017; 27(10): 1258. CrossRef
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Yoon Jin Cha, Ju Yeon Pyo, SoonWon Hong, Jae Yeon Seok, Kyung-Ju Kim, Jee-Young Han, Jeong Mo Bae, Hyeong Ju Kwon, Yeejeong Kim, Kyueng-Whan Min, Soonae Oak, Sunhee Chang
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Chan Kwon Jung, Jung Hwan Baek
Endocrinology and Metabolism.2017; 32(4): 407. CrossRef
Core-needle biopsy for the preoperative diagnosis of follicular neoplasm in thyroid nodule screening: A validation study
Sung Hak Lee, Gyeong Sin Park, So Lyung Jung, Min-Hee Kim, Ja Seong Bae, Dong Jun Lim, Chan Kwon Jung
Pathology - Research and Practice.2016; 212(1): 44. CrossRef
The Role of Core-Needle Biopsy as a First-Line Diagnostic Tool for Initially Detected Thyroid Nodules
Chong Hyun Suh, Jung Hwan Baek, Jeong Hyun Lee, Young Jun Choi, Jae Kyun Kim, Tae-Yon Sung, Jong Ho Yoon, Young Kee Shong
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Dong Gyu Na, Ji-hoon Kim, Dea Sik Kim, Soo Jin Kim
Ultrasonography.2016; 35(2): 153. CrossRef
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Dong Gyu Na, Dae Sik Kim, Soo Jin Kim, Jae Wook Ryoo, So Lyung Jung
Ultrasonography.2016; 35(3): 212. CrossRef
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Dong Gyu Na, Jung Hwan Baek, Jin Yong Sung, Ji-Hoon Kim, Jae Kyun Kim, Young Jun Choi, Hyobin Seo
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Paul A. VanderLaan
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Chong Hyun Suh, Jung Hwan Baek, Jeong Hyun Lee, Young Jun Choi, Kyung Won Kim, Jayoun Lee, Ki-Wook Chung, Young Kee Shong
Endocrine.2016; 54(2): 315. CrossRef
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Chong Hyun Suh, Jung Hwan Baek, Kyung Won Kim, Tae Yon Sung, Tae Yong Kim, Dong Eun Song, Young Jun Choi, Jeong Hyun Lee
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Case Reports

Liquid-Based Cytology of Villoglandular Adenocarcinoma of the Cervix: A Report of 3 Cases: Younghwa Choi, Haeryoung Kim, Haiyoung Choi, Daehyun Hwang, Gheeyoung Choe, Jin-Haeng Chung, So Yeon Park, Hye Seung Lee, Jin Ho Paik, Hyo Jin Park; Korean J Pathol. 2012;46(2):215-220. Published online April 25, 2012; DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.2.215

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Abstract PDF

Villoglandular adenocarcinoma (VGA) is a rare subtype of cervical adenocarcinoma with a more favorable prognosis compared to conventional adenocarcinomas. Although the tumors are usually recognized on colposcopic examination due to the mainly exophytic growth pattern, they may be underdiagnosed as benign lesions by cytology because of their minimal cytologic atypia. We report the liquid-based cytology (LBC) findings of three histologically confirmed VGAs which we have recently identified. They were characterized by hypercellular smears on low-power examination with smooth-bordered three-dimensional papillary fragments. The nuclei were relatively uniform with irregular nuclear membranes. Nucleoli were small but distinct and macronucleoli were also seen. The abnormal architectural patterns such as papillary structures and nuclear overlapping and nuclear hyperchromasia are important clues to the diagnosis of VGA. In addition, nuclear membrane irregularity and prominent nucleoli can be recognized on LBC specimens, further facilitating its diagnosis.

Citations

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Villoglandular adenocarcinoma of the uterine cervix: a systematic review and meta-analysis
Anna K. Dietl, Matthias W. Beckmann, Konrad Aumann
Archives of Gynecology and Obstetrics.2021; 304(2): 317. CrossRef
Les lésions glandulaires du col utérin : cas no 4
Catherine Genestie, Chiraz Hadj Kacem, Pierre Duvillard
Annales de Pathologie.2016; 36(3): 192. CrossRef

Invasive Cribriform Carcinoma Arising in Malignant Phyllodes Tumor of Breast: A Case Report: Yoomi Choi, Kyoung Yul Lee, Min Hye Jang, Hyesil Seol, Sung-Won Kim, So Yeon Park; Korean J Pathol. 2012;46(2):205-209. Published online April 25, 2012; DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.2.205

6,940 View
47 Download
6 Crossref

Abstract PDF

Phyllodes tumor is an uncommon fibroepithelial neoplasm of the breast. And it is characterized by expanded stroma with increased cellularity and elongated epithelium-lined clefts. Mammary carcinomas within phyllodes tumors have been rarely reported. To date, however, no reports have described the invasive cribriform carcinoma arising in malignant phyllodes tumor. Here, we report a 62-year-old woman who presented with a large breast mass. Microscopically, the mass was a typical malignant phyllodes tumor showing well developed leaf-like architecture and stromal overgrowth with high cellularity and nuclear pleomorphism. In a portion of the tumor, however, the epithelial component showed a cribriform pattern of proliferation in the absence of myoepithelial cells, suggestive of the invasive cribriform carcinoma. To our knowledge, this is rare and it is difficult to make a differential diagnosis of it. Here, we report our case with a review of literatures.

Citations

Citations to this article as recorded by

Management of Concurrent Malignant Phyllodes Tumor and Invasive Breast Carcinoma
Jie Jane Chen, Iowis Zhu, Akshat Patel, Gregor Krings, Yunn-Yi Chen, Florence Yuen, Rita A. Mukhtar, Michelle Melisko, Lisa Singer, Catherine C. Park, Nicolas D. Prionas
Advances in Radiation Oncology.2024; 9(5): 101448. CrossRef
High-grade ductal carcinoma in-situ detected by microcalcification within borderline phyllodes tumor: Report of a case and literature review
Wing Nam Yuen, Joshua J.X. Li, Man Yi Chan, Gary M. Tse
Human Pathology Reports.2023; 31: 300697. CrossRef
Cribriform carcinoma arising in a benign phyllodes tumor
EliaShazniza Shaaya, Nurwahyuna Rosli, Nurismah MD Isa
Journal of Research in Medical Sciences.2023; 28(1): 16. CrossRef
Unexpectedly High Coexistence Rate of In Situ/Invasive Carcinoma In Phyllodes Tumors. 10-Year Retrospective and Review Study
Öykü Dila Gemci, Serdar Altınay, Rümeysa İlbar Tartar, Sina Ferahman
European Journal of Breast Health.2022; 18(4): 343. CrossRef
A Case of Phyllodes Tumor Combined with Lobular Carcinoma of the Breast with Microinvasion
Daiki IMANISHI, Satoru NODA, Tsutomu TAKASHIMA, Yukie TAUCHI, Shinya NOMURA, Hiroshi OHTANI, Noriko SAKAIDA
Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association).2022; 83(12): 2049. CrossRef
Invasive ductal carcinoma within borderline phyllodes tumor with lymph node metastases: A case report and review of the literature
DI WU, HAIPENG ZHANG, LIANG GUO, XU YAN, ZHIMIN FAN
Oncology Letters.2016; 11(4): 2502. CrossRef

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