Breast Metaplastic Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A group of invasive breast carcinomas characterized by the presence of an adenocarcinomatous component which is admixed with a dominant component that is composed of squamous cells, spindle cells, or mesenchymal cells.

**Synonyms:** - MpBC - Metaplastic Breast Carcinoma - Metaplastic Carcinoma of Breast - Metaplastic Carcinoma of the Breast