Abstract
Adenoma of the nipple is an uncommon lesion of the breast. It can be clinically mistaken for Paget's disease, because the both have common clinical features such as erosion, ulcer, and crust of the nipple. Histologically this disease also mimics syringocystadenoma papilliferum, intraductal papilloma and well-differentiated adenocarcinoma. This paper describes a case of adenoma of the left nipple in a 60-year-old married woman, who was seen at the hospital because of bloody nipple discharge and a firm erosive lump measuring 8×8 mm in the nipple.
The number of cases previously reported under these various terms in Japan is only 22 (including this case). These 22 cases were reviewed in terms of the clinical and pathological features of this entity.
