intraductal breast neoplasm breast intraductal proliferative lesion https://www.malacards.org/card/breast_intraductal_proliferative_lesion mammary intraepithelial neoplasia, ductal type intraductal proliferative lesion DOID:6839 UMLS:C1334631 ductal intraepithelial neoplasia DIN MEDGEN:277343 MONDO:0004007 A group of non-invasive epithelial proliferations that occur in the ductal system of the breast. The vast majority of cases arise in the terminal ductal lobular units. This category includes atypical ductal hyperplasia, usual ductal hyperplasia, flat epithelial atypia, and ductal carcinoma in situ. There is an increased risk for subsequent development of invasive breast carcinoma. NCIT:C27942 intraductal proliferative lesion of the breast