Thyroid Gland Mixed Medullary and Papillary Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A primary carcinoma of the thyroid gland containing a medullary carcinoma component that is immunohistochemically positive for calcitonin, and papillary carcinoma component that is immunohistochemically positive for thyroglobulin.

**Synonyms:** - MMPTC - Mixed Medullary and Papillary Thyroid Carcinoma - Mixed medullary-papillary carcinoma