Journal of Pathology and Translational Medicine

Original Articles

Cytological Features That Differentiate Follicular Neoplasm from Mimicking Lesions: Kanghee Han, Hwa-Jeong Ha, Joon Seog Kong, Jung-Soon Kim, Jae Kyung Myung, Jae Soo Koh, Sunhoo Park, Myung-Soon Shin, Woo-Tack Song, Hye Sil Seol, Seung-Sook Lee; J Pathol Transl Med. 2018;52(2):110-120. Published online January 29, 2018; DOI: https://doi.org/10.4132/jptm.2018.01.17

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Background
It is difficult to correctly diagnose follicular neoplasms (FNs) on fine-needle aspiration cytology (FNAC) because it shares many cytological features with other mimicking lesions. The aim of this study was to identify the cytological features that differentiate FNs from mimicking lesions.
Methods
We included the cytological slides from 116 cases of thyroid FN diagnosed on FNAC, and included their subsequent histological diagnoses. We evaluated the cytological architectural pattern and nuclear features of the lesions according to their histological groups.
Results
The final histological diagnoses of the 116 cases varied, and included 51 FNs (44%), 47 papillary thyroid carcinomas (40%) including follicular variant, and seventeen cellular nodular hyperplasias (15%). Regardless of the final histological diagnosis, microfollicular pattern was observed in most cases. On the other hand, trabecular pattern was identified in 34% of FNs, but not in any other lesions. Additionally, elongated nuclei and ground glass chromatin were found in only some papillary thyroid carcinomas.
Conclusions
This study shows that the trabecular pattern is a representative cytological feature of FNs that can be used to distinguish FNs from mimicking lesions. In addition, nuclear shape and chromatin pattern can be used to further confirm the diagnosis of FNs from mimicking lesions through FNAC.

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АКТУАЛЬНІ ТЕНДЕНЦІЇ ДІАГНОСТИКИ ТА ЛІКУВАННЯ ФОЛІКУЛЯРНИХ НЕОПЛАЗІЙ ЩИТОПОДІБНОЇ ЗАЛОЗИ
А. Я. Пасько, В. Д. Скрипко
Art of Medicine.2025; : 82. CrossRef
Diagnostic implication of thyroid spherules for cytological diagnosis of thyroid nodules
Heeseung Sohn, Kennichi Kakudo, Chan Kwon Jung
Cytopathology.2024; 35(3): 383. CrossRef
Fine needle aspiration cytology diagnoses of follicular thyroid carcinoma: results from a multicenter study in Asia
Hee Young Na, Miyoko Higuchi, Shinya Satoh, Kaori Kameyama, Chan Kwon Jung, Su-Jin Shin, Shipra Agarwal, Jen-Fan Hang, Yun Zhu, Zhiyan Liu, Andrey Bychkov, Kennichi Kakudo, So Yeon Park
Journal of Pathology and Translational Medicine.2024; 58(6): 331. CrossRef
Using Deep Convolutional Neural Networks for Enhanced Ultrasonographic Image Diagnosis of Differentiated Thyroid Cancer
Wai-Kin Chan, Jui-Hung Sun, Miaw-Jene Liou, Yan-Rong Li, Wei-Yu Chou, Feng-Hsuan Liu, Szu-Tah Chen, Syu-Jyun Peng
Biomedicines.2021; 9(12): 1771. CrossRef
The Role of Fine Needle Aspiration Biopsy with Bethesda System in the Evaluation of Thyroid Nodules
Gizem AKKAŞ AKGÜN, Figen ASLAN
Anadolu Kliniği Tıp Bilimleri Dergisi.2021; 26(1): 23. CrossRef
Comprehensive DNA Methylation Profiling Identifies Novel Diagnostic Biomarkers for Thyroid Cancer
Jong-Lyul Park, Sora Jeon, Eun-Hye Seo, Dong Hyuck Bae, Young Mun Jeong, Yourha Kim, Ja Seong Bae, Seon-Kyu Kim, Chan Kwon Jung, Yong Sung Kim
Thyroid.2020; 30(2): 192. 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
Hee Young Na, Jae Hoon Moon, June Young Choi, Hyeong Won Yu, Woo-Jin Jeong, Yeo Koon Kim, Ji-Young Choe, So Yeon Park, Paula Soares
PLOS ONE.2020; 15(11): e0241597. CrossRef

Importance of Individual Ghost Cells in Fine-Needle Aspiration Cytology Diagnosis of Pilomatricoma: Kanghee Han, Hwa-Jeong Ha, Joon Seog Kong, Jae Kyung Myung, Sunhoo Park, Jung-Soon Kim, Myung-Soon Shin, Hye Sil Seol, Jae Soo Koh, Seung-Sook Lee; J Pathol Transl Med. 2018;52(1):45-50. Published online January 15, 2018; DOI: https://doi.org/10.4132/jptm.2017.10.18

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Abstract PDF

Background
Although histological diagnosis of pilomatricoma is not difficult because of its unique histological features, cytological diagnosis through fine-needle aspiration cytology (FNAC) is often problematic due to misdiagnoses as malignancy.
Methods
We reviewed the cytological features of 14 cases of histologically-proven pilomatricoma from Korea Cancer Center Hospital, with a discussion on the diagnostic pitfalls of FNAC.
Results
Among 14 cases of pilomatricoma, 10 (71.4%) were correctly diagnosed through FNAC, and two (14.3%) were misdiagnosed as carcinoma. Cytologically, all cases had easily recognizable clusters of basaloid cells and foreign body-type multinucleated cells. Although ghost cells were also found in all cases, some were inconspicuous and hardly recognizable due to their small numbers.
Conclusions
An accurate diagnosis of pilomatricoma in FNAC is feasible with consideration of clinical information and close examination of ghost cells.

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A case of pilomatricoma with suspected malignancy diagnosed by intraoperative rapid cytological diagnosis
Miho YOSHIDA-TANAKA, Kazuya KURAOKA, Naoko YASUMURA, Arisa KAN, Yumi SAIKI, Akihiro KAGAWA, Akihisa SAITO, Kiyomi TANIYAMA
The Journal of the Japanese Society of Clinical Cytology.2019; 58(3): 133. CrossRef

Clinical Usefulness of SurePath(TM) Liquid-based Cytology in Thyroid Fine Needle Aspiration: Comparison with the Conventional Smear in Diagnostic Efficacy and Applicability of BRAF Mutation Test.: Wook Youn Kim, Sang Hwa Lee, Young Sin Ko, So Dug Lim, Wan Seop Kim, Hye Seung Han, Hye Sil Seol, Seo Young Oh, Won Jin Moon, Tae Sook Hwang; Korean J Pathol. 2011;45(2):188-195.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.2.188

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Abstract PDF

BACKGROUND
Recently, liquid-based cytology (LBC) has been introduced as an alternative to the conventional smear (CS) technique in thyroid fine needle aspiration, due to its diagnostic convenience.
METHODS
We assessed 77 cases of thyroid fine needle aspiration using the SurePath(TM) method (SP) as LBC and CS via split-sample techniques. BRAF mutation tests were carried out via polymerase chain reaction and pyrosequencing immediately after diagnosis or a delay of more than one year.
RESULTS
In a comparison between SP and CS, the rate of concordance between SP and CS was as high as 84.4% (kappa value, 0.754). In comparison with histologic diagnosis, the overall sensitivity was 100% for both. The specificity was 62.5% for SP and 56.3% for CS. Relative to CS, papillary carcinomas on SP slides revealed more accentuated nuclear irregularities, nucleoli, and reduced nuclear size. In contrast to CS, the delayed BRAFV600E mutation test using SP slides after 1-2 years failed. The use of new primers amplifying shorter product size could help the delayed test achieve success.
CONCLUSIONS
Differences in the diagnostic efficacy of SP and CS were negligible. The failure of the delayed BRAF mutation test on the SP slides might be associated with DNA degradation.

Citations

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Comparison of Liquid-Based Preparations with Conventional Smears in Thyroid Fine-Needle Aspirates: A Systematic Review and Meta-Analysis
Yun Jin Kang, Hyeon Woo Lee, Gulnaz Stybayeva, Se Hwan Hwang
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Liquid‐based cytology of pigmented phaeohyphomycotic lesion of the palm masquerading as a metastatic tumor
Thara Keloth, Debasis Gochhait, S Sivaranjani, Neelaiah Siddaraju
Diagnostic Cytopathology.2019; 47(8): 828. CrossRef
DNA degradation in liquid‐based cytology and its comparison with conventional smear
Wook Youn Kim, Seo Young Oh, Hyunkyung Kim, Tae Sook Hwang
Diagnostic Cytopathology.2016; 44(5): 450. CrossRef
Comparison of EASYPREP® and SurePath® in thyroid fine‐needle aspiration
Yosep Chong, Ki Hyun Baek, Jee Young Kim, Tae‐Jung Kim, Eun Jung Lee, Chang Suk Kang
Diagnostic Cytopathology.2016; 44(4): 283. CrossRef
Conventional smears versus liquid-based preparations for thyroid fine-needle aspirates: a systematic review and meta-analysis
Neeraja Nagarajan, Alireza Najafian, Eric B. Schneider, Martha A. Zeiger, Matthew T. Olson
Journal of the American Society of Cytopathology.2015; 4(5): 253. CrossRef
Liquid‐based cytology improves preoperative diagnostic accuracy of the tall cell variant of papillary thyroid carcinoma
Sung Hak Lee, Chan Kwon Jung, Ja Seong Bae, So Lyung Jung, Yeong Jin Choi, Chang Suk Kang
Diagnostic Cytopathology.2014; 42(1): 11. CrossRef
Stability of DNA, RNA, cytomorphology, and immunoantigenicity in Residual ThinPrep® Specimens
Younghye Kim, Kap Ro Choi, Moon Jung Chae, Bong Kyung Shin, Han Kyeom Kim, Aeree Kim, Baek‐hui Kim
APMIS.2013; 121(11): 1064. CrossRef
The Development of the Liquid Cell Smear Device for Liquid-Based Cytology Test
Han Yeong Oh, Ha Ju So, Seong Hyun Kim, Dong Wook Kim, Hyun Chang Kim
Applied Mechanics and Materials.2013; 284-287: 1564. CrossRef

Case Report

Undifferentiated Carcinoma Arising in a Choledochal Cyst: A Case Report.: Hee Eun Lee, Chang Lim Hyun, You Jeong Lee, Hye Sil Seol, Ja June Jang; Korean J Pathol. 2006;40(6):461-465.

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Abstract PDF: An association between choledochal cyst and carcinoma is well established. Here, we report an extremely rare case of undifferentiated carcinoma exhibiting extensive sarcomatous features arising in a choledochal cyst. The patient in our case had a radiologically confirmed choledochal cyst and anomalous pancreaticobiliary ductal union, and mild wall thickening in the cyst was observed on endoscopic retrograde cholangiopancreatography. The patient underwent common bile duct excision and cholecystectomy. In the choledochal cyst, a nodule measuring 1.5x1 cm was detected. The lesion was composed of atypical, spindle-shaped and large, round pleomorphic tumor cells simulating sarcoma. Neither glandular nor squamous differentiation was observed. These cells were immunoreactive for both vimentin and cytokeratin by immunohistochemistry. These histologic and immunohistochemical findings were consistent with undifferentiated carcinoma, spindle and giant cell type, according to the WHO classification.

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