Ductal Carcinoma in situ (Medium Power)

Ductal Carcinoma in situ (Medium Power) • This photograph shows numerous microcalcifications within dilated ducts. • The lining cells show atypia, not visible at this magnfication, and lack a myoepithelial cell layer. • The basement membrane is intact. • Despite the fact that the lumen is not filled with abnormal cells, this is still a case of carcinoma in situ, ductal ("clinging type"). (Description By:Melinda Sanders, M.D. ) (Image Contrib. by: UCHC )