摘要: K. Gunay*, Tahir E. Pat1roglu**, Turhan Olden*** liloi. IM! Irv· Proliferating trichilemmal cyst (PTC) is an uncommon lesion which most commonly occurs on the scalp of women. Its importance lies in the fact that which they are misdiagnosed both clinically and histologically as ilcilflllCiiCI carcinoma. In this paper, we present two cases of PTC who had been initially thougth to have epidermoidPalrlli: w::. lil'll'ltrichilemmal cyst (PTC) or pilar tumor (PT) is an uncommon lesion which most commonly occur on the., of elderly women. Its diameter ranges1 to 5 em. but may be greater than 25 em. The smaller lesions clinically IISelllble ordinary trichilemmal cysts which are generally misnamed as" sebaceous cysts• while the larger lesions tend~ be multilobular and are frequently fungating and ulcerated, resembling epidermoid carcinoma (3).