Abstract

The cytomorphological features of 17 cases of confirmed MTC were analyzed. cytomorphological features were moderate to marked cellularity, isolated cells alternate with clusters in variable proportions, plasmacytoid, polygonal, round, and(or)spindle-shaped cells, mild to moderate pleomorphism, finely or salt and pepper-like chromatin, frequent binucleation/multinuleation, rare bizarre giant cells may be seen, nuclear pseudoinclusions are occasionally noted, unremarkable nucleoli, cytoplasm is granular and variable. Amyloid is often present. MTC could be adequately diagnosed by FNA, According to the clinical characteristics and cellblock immunochemical staining can be helpful in diagnosis of MTC. (Chin J Endocrinol Metab, 2016, 32: 677-679) Key words: Thyroid neoplasms; Fine needle aspiration; Medullary thyroid carcinoma

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