Preferred Label : Breast Usual Ductal Hyperplasia;
NCIt synonyms : Ordinary Intraductal Breast Hyperplasia; Ductal Breast Hyperplasia of Usual Type; UDH; Usual Ductal Breast Hyperplasia; Breast Hyperplasia without Atypia;
NCIt definition : A neoplastic ductal proliferative lesion of the breast characterized by the formation
of secondary lumens and prominent intraductal proliferation of a heterogeneous cellular
population that may include epithelial cells, myoepithelial cells, or metaplastic
apocrine cells.;