Breast Intraductal Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A benign or malignant epithelial neoplasm that arises anywhere in the ductal system of the breast. This category includes intraductal papilloma, intraductal papillary carcinoma, ductal hyperplasia with or without atypia, and ductal carcinoma in situ.

**Synonyms:** - Intraductal Breast Neoplasm