FNA and further left hemithyroidectomy were performed.
MICROSCOPIC DESCRIPTION: Sections of thyroid gland show a 9mm papillary thyroid carcinoma composed of slit-like follicles and papillary structures. Scattered psammomatous microcalcifications are present. Tumor cells demonstrate nuclear enlargement with crowding and overlapping, intranuclear grooves and chromatin clearing. The ill-defined unencapsulated tumor infiltrates into adjacent fibroadipose tissue and extends to involve the inked posterior margin. No lymphovascular or perineural invasion is seen. The adjacent thyroid parenchyma appears unremarkable.