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(A) fine needle aspiration showing atypical cells forming papillary clusters, diagnosed as TIR5-SIAPEC (Bethesda VI and to Thy5-BTA), compatible with papillary thyroid carcinoma. Histologically the tumor showed complex papillary architecture (B) intranuclear inclusions (C, arrow), mitotic activity (D, arrow), immunohistochemical thyroglobulin (E) and TTF1 expression (F).
