Abstract
A 38-year-old male developed a right breast lump and a right nipple discharge. Needle biopsy suggested the possibility of a neoplasm originating in a skin appendage, and an excisional biopsy was performed. On histopathology, a clear cell hidradenoma of the breast was diagnosed. Clear cell hidradenoma originating from the breast is rare. The clinical characteristics of such hidradenomas based on 30 cases reported in the literature were reviewed. There is a tendency for hidradenomas to occur in men in contrast to breast cancer, and there is little difference among age groups in the incidence. The vicinity of the areola is a preferred site, and a large number of patients have concomitant cystic lesions.
