ERUPTIVE CLEAR-CELL HAMARTOMA OF SWEAT-DUCT

A histologically unique condition of the sweat duct was found in a mil iaria-like papular eruption on the extensor surfaces of extremities of a 41-year-old female patient. The hypertrophic epithelium of the swea t duct wall consisted of extensively vacuolated clear cells. There was mild hyperkeratosis around the sweat duct orifice. The eccrine gland cells showed only partial vacuolization. Since this condition is not r elated to any of the other known benign changes of the eccrine duct, w e report it with a presumptive descriptive diagnosis of eruptive clear cell hamartoma of sweat duct.