Proliferating breast mass is: (A) Duct ectasia, (B) Fibroadenoma, (C) Adenosis, (D) Papilloma
Answer is D. the proliferating epithelium projects as multiple small papillary excrescences into the ductal lumen (ductal papillomatosis). The degree of hyperplasia, judged in pa by the number of layers of intraductal epithelium, can be mild, moderate, or marked. Occasionally, hyperplasia produces microcalcifications on mammography, raising concern for cancer. ref : Robbins Basic Pathology, 9E,page-706