Endocrine Abstracts

Introduction: Carcinoma showing thymus-like differentiation (CASTLE) is a rare, low-grade thyroid carcinoma, with indolent clinical course and usually a favorable prognosis. The clinical and imagistic features are not specific for CASTLE but similar to other malignant lesions of the thyroid, making diagnosis difficult and reliant on immunohistochemical examination. The conclusive diagnosis requires pathological examination and positive cluster of differentiation 5 (CD5) immuno...