The paper characterizes sclerosing mucoepidermoid carcinoma with eosinophilia, a rare thyroid tumor, including histological and immunohistochemical features. The authors give their observation of a 26-year-old patient. The immunohistochemical findings (positive p63 and TTF-1 tumor cell nuclear staining) show the dual nature of a tumor arising from the cells of the ultimobranchial body and folli...