“Histiocytoid” cells in fine-needle aspirations of papillary carcinoma of the thyroid

Although the classic cytologic features of papillary carcinoma of the thyroid in fine-needle aspirates have been well described, one uncommon feature, a vacuolated, histocyte-like cell without classic nuclear changes of papillary carcinoma, has been less well characterized.The author reviewed a large series of thyroid aspirates for specimens with these cytologic features.Seven specimens were identified, representing approximately 6% of all...