Medullary carcinoma


MSH: A carcinoma composed mainly of epithelial elements with little or no stroma. Medullary carcinomas of the breast constitute 5%-7% of all mammary carcinomas; medullary carcinomas of the thyroid comprise 3%-10% of all thyroid malignancies. (From Dorland, 27th ed; DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1141; Segen, Dictionary of Modern Medicine, 1992),NCI: A term referring to medullary carcinomas which can develop in various anatomic sites such as the thyroid gland, breast, colon, rectum, and small intestine.

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