Molecular Correlates and Nuclear Features of Encapsulated Follicular-Patterned Thyroid Neoplasms
| Autor: | Chan Kwon Jung, Andrey Bychkov, Dong Eun Song, Jang-Hee Kim, Yun Zhu, Zhiyan Liu, Somboon Keelawat, Chiung-Ru Lai, Mitsuyoshi Hirokawa, Kaori Kameyama, Kennichi Kakudo |
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| Jazyk: | English<br />Korean |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Endocrinology and Metabolism, Vol 36, Iss 1, Pp 123-133 (2021) |
| Druh dokumentu: | article |
| ISSN: | 2093-596X 2093-5978 |
| DOI: | 10.3803/EnM.2020.860 |
| Popis: | Background Assessing nuclear features is diagnostically challenging in the aspect of thyroid pathology. The aim of this study was to determine whether pathologists could distinguish BRAF-like and RAS-like nuclear features morphologically and identify morphological features to differentiate thyroid tumors with RAS-like mutations from encapsulated papillary thyroid carcinoma (PTC) with predominant follicular growth and BRAFV600E mutation. Methods Representative whole slide images of 16 encapsulated thyroid tumors with predominant follicular growth were reviewed by 12 thyroid pathologists using a web browser-based image viewer. Total nuclear score was calculated from semi-quantitatively scored eight nuclear features. The molecular profile of RAS and BRAF genes was determined by Sanger sequencing. Results Total nuclear score ranging 0 to 24 could differentiate BRAF-like tumors from RAS-like tumors with a cut-off value of score 14. The interobserver agreement was the highest for the assessment of nuclear pseudoinclusions (NPIs) but the lowest for nuclear elongation and sickle-shaped nuclei. NPIs were found in tumors with BRAFV600E mutation, but not in tumors with RAS-like mutations. Total nuclear scores were significantly higher for tumors with BRAFV600E than for those with RAS-like mutations (P |
| Databáze: | Directory of Open Access Journals |
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