Journal of Pathology and Translational Medicine

Nam Hee Won

2 Articles

Morphometric Analysis of Thyroid Follicular Cells with Atypia of Undetermined Significance: Youngjin Kang, Yoo Jin Lee, Jiyoon Jung, Youngseok Lee, Nam Hee Won, Yang Seok Chae; J Pathol Transl Med. 2016;50(4):287-293. Published online June 13, 2016; DOI: https://doi.org/10.4132/jptm.2016.04.04

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Background
Atypia of undetermined significance (AUS) is a category that encompasses a heterogeneous group of thyroid aspiration cytology. It has been reclassified into two subgroups based on the cytomorphologic features: AUS with cytologic atypia and AUS with architectural atypia. The nuclear characteristics of AUS with cytologic atypia need to be clarified by comparing to those observed in Hashimoto thyroiditis and benign follicular lesions.
Methods
We selected 84 cases of AUS with histologic follow-up, 24 cases of Hashimoto thyroiditis, and 26 cases of benign follicular lesions. We also subcategorized the AUS group according to the follow-up biopsy results into a papillary carcinoma group and a nodular hyperplasia group. The differences in morphometric parameters, including the nuclear areas and perimeters, were compared between these groups.
Results
The AUS group had significantly smaller nuclear areas than the Hashimoto thyroiditis group, but the nuclear perimeters were not statistically different. The AUS group also had significantly smaller nuclear areas than the benign follicular lesion group; however, the AUS group had significantly longer nuclear perimeters. The nuclear areas in the papillary carcinoma group were significantly smaller than those in the nodular hyperplasia group; however, the nuclear perimeters were not statistically different.
Conclusions
We found the AUS group to be a heterogeneous entity, including histologic follow-up diagnoses of papillary carcinoma and nodular hyperplasia. The AUS group showed significantly greater nuclear irregularities than the other two groups. Utilizing these features, nuclear morphometry could lead to improvements in the accuracy of the subjective diagnoses made with thyroid aspiration cytology.

Citations

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Meta-analysis on the utility of morphometry in the cytological differential diagnosis of thyroid neoplasms
Prema Saldanha
MGM Journal of Medical Sciences.2024; 11(1): 49. CrossRef
Gray zone Bethesda category III – Atypia of undetermined significance lesions of the thyroid: Potential diagnostic issues and image morphometry as a useful adjunct to cytomorphology
Tarunpreet Saini, Reetu Kundu, Manish Rohilla, Parikshaa Gupta, Nalini Gupta, Radhika Srinivasan, Uma Nahar Saikia, Pranab Dey
Cytojournal.2024; 21: 38. CrossRef
Morphometric study in thyroid tumors
Iuliana Mohorea, Bogdan Socea, Alexandru Carâp, Dragoș Șerban, Zenaida Ceaușu, Mihail Ceaușu
Experimental and Therapeutic Medicine.2023;[Epub] CrossRef
The Usefulness of Immunocytochemistry of CD56 in Determining Malignancy from Indeterminate Thyroid Fine-Needle Aspiration Cytology
Hyunseo Cha, Ju Yeon Pyo, Soon Won Hong
Journal of Pathology and Translational Medicine.2018; 52(6): 404. CrossRef

Clinicopathological Analysis of Hepatocellular Adenoma According to New Bordeaux Classification: Report of Eight Korean Cases: Hyunchul Kim, Ja-June Jang, Dong-Sik Kim, Beom Woo Yeom, Nam Hee Won; Korean J Pathol. 2013;47(5):411-417. Published online October 25, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.5.411

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Abstract PDF

Background

Hepatocellular adenoma (HCA) is a rare benign tumor of the liver. A subtype classification of HCA (hepatocyte nuclear factor 1α [HNF1α]-mutated, β-catenin-mutated HCA, inflammatory HCA, and unclassified HCA) has recently been established based on a single institutional review of a HCA series by the Bordeaux group.

Methods

We used histologic and immunohistochemical parameters to classify and evaluate eight cases from our institution. We evaluated the new classification method and analyzed correlations between our results and those of other reports.

Results

Seven of our eight cases showed histologic and immunohistochemical results consistent with previous reports. However, one case showed overlapping histologic features, as previously described by the Bordeaux group. Four cases showed glutamine synthetase immunohistochemical staining inconsistent with their classification, indicating that glutamine synthetase staining may not be diagnostic for β-catenin-mutated HCA. HNF1α-mutated HCA may be indicated by the absence of liver fatty acid binding protein expression. Detection of amyloid A may indicate inflammatory HCA. HCA with no mutation in the HNF1α or β-catenin genes and no inflammatory protein expression is categorized as unclassified HCA.

Conclusions

Although the new classification is now generally accepted, validation through follow-up studies is necessary.

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Sounak Gupta, Bita V. Naini, Richard Munoz, Rondell P. Graham, Benjamin R. Kipp, Michael S. Torbenson, Taofic Mounajjed
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Pigmented hepatocellular adenomas have a high risk of atypia and malignancy
Taofic Mounajjed, Saba Yasir, Patrice A Aleff, Michael S Torbenson
Modern Pathology.2015; 28(9): 1265. CrossRef

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