intraductal papillary breast neoplasm MEDGEN:233572 NCIT:C36090 intraductal papillary breast neoplasm UMLS:C1334252 A benign or malignant papillary neoplasm that arises anywhere in the ductal system of the breast. It is characterized by fibrovascular structures lined by epithelial proliferations. This category includes intraductal papilloma and intraductal papillary carcinoma. DOID:1628 MONDO:0002061 intraductal breast neoplasm