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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Calcitonin is a marker of -
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The correct answer is  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. .