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( Ja Seung Koo ),( Soonwon Hong ) 대한갑상선학회 2010 International Journal of Thyroidology Vol.3 No.1
Background and Objectives: The aim of the present study was to investigate the clinicopathological characteristics and implications of papillary carcinoma with extensive calcification and bone metaplasia (PTCECB), and to determine the differences between PTCECB and benign nodules with calcification and bone metaplasia (BNECB). Materials and Methods: We retrospectively reviewed the slides of 41 PTCECB cases and 30 BNECB cases. Results: Only four (9.8%) cases of PTCECB demonstrated psammoma bodies. Twenty eight (68.3%) cases of PTCECB showed prominent follicular architectures with occasional bland-appearing thyrocytes showing diffuse immunohistochemical expression for CK19 and galectin-3. All BNECBs revealed expanding tumor margins and were intrathyroidally located. In contrast, PTCECB showed expanding tumor margins in 26 (63.4%) cases (p=0.001) and extrathyroidal extension in 20 (48.8%) cases (p=0.000). Conclusion: PTCECB showed characteristics of prominent follicular architecture and an absence of psammoma bodies and should be differentiated from BNECB by histological features such as extrathyroidal extension and characteristic nuclear features of papillary thyroid carcinoma combined with immunohistochemical study such as CK19 and galectin-3.
Jung, Chan Kwon,Hong, SoonWon,Bychkov, Andrey,Kakudo, Kennichi The Korean Society of Pathologists and the Korean 2017 Journal of Pathology and Translational Medicine Vol.51 No.6
<P>Ultrasound-guided fine-needle aspiration (FNA) cytology is the most widely used screening and diagnostic method for thyroid nodules. Although Western guidelines for managing thyroid nodules and the Bethesda System for Reporting Thyroid Cytopathology are widely available throughout Asia, the clinical practices in Asia vary from those of Western countries. Accordingly, the Working Group of Asian Thyroid FNA Cytology encouraged group members to publish their works jointly with the same topic. The articles in this special issue focused on the history of thyroid FNA, FNA performers and interpreters, training programs of cytopathologists and cytotechnicians, staining methods, the reporting system of thyroid FNA, quality assurance programs, ancillary testing, and literature review of their own country’s products. Herein, we provide a brief overview of thyroid FNA practices in China, India, Japan, Korea, the Philippines, Taiwan, and Thailand.</P>