Breast Small Cell Neuroendocrine Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A poorly differentiated neuroendocrine carcinoma that arises from the breast. It is characterized by the presence of small neuroendocrine cells and high mitotic activity.

**Synonyms:** - Breast Small Cell Carcinoma - Oat Cell Carcinoma of Breast - Oat Cell Carcinoma of the Breast - Small Cell Carcinoma of Breast - Small Cell Carcinoma of the Breast - Small Cell Neuroendocrine Carcinoma of Breast - Small Cell Neuroendocrine Carcinoma of the Breast