Question: what is the difference between medullary and papillary thyroid cancer?
Answer: Papillary thyroid carcinoma (PTC) and medullary thyroid carcinoma (MTC) are two different thyroid neoplasia. The former originates from thyroglobulin-producing follicular cells, whereas the latter arises from calcitonin-producing cells. MTC is a rare tumor that arises from neural crest-derived parafollicular C cells.