Primary hyperparathyroidism, phaeochromocytoma may be associated with which type of thyroid cancer?: (A) Medullary carcinoma of the thyroid, (B) Papillary carcinoma of the thyroid, (C) Anaplastic carcinoma of the thyroid, (D) Follicular carcinoma of the thyroid
Answer is A. Ref : Bailey and love surgery text book 27th Ed. It is characterized clinically by medullary thyroid carcinoma (MTC), pheochromocytoma, and hyperparathyroidism. Approximately 70-95% of individuals with MEN 2A develop MTC, 50% develop pheochromocytoma, and 15-30% develop hyperparathyroidism.