Calcitonin is a marker of -: (A) Prostate cancer, (B) Medullary carcinoma of thyroid, (C) Pheochromocytoma, (D) Pancreatic cancer
Answer is B. Harshmohan textbook of pathology 7th edition. medulla carcinoma is a less frequent type derived from para follicular or C cells present in the thyroid. Like normal C cells tumor cells of medullary carcinoma secrete calcitonin the hypo calcimic hormone. So calcitonin is an impoant tumor marker of medullary carcinoma of thyroid. .