Steatocystoma simplex, first described as a distinct entity by Brownstein in 1982, is an extremely rare benign adnexal tumor. The individual lesion of steatocystoma simplex is usually identical with that of steatocystoma multiplex, both clinically and histologically, but is characterized by solitary, non- heritable growth in adulthood. Steatocystoma simplex occurs predominantly on the face, but the incidence of steatocystoma simplex on the scalp is extremely low. Only three cases of steatocystoma simplex on the scalp have been reported worldwide. We report an additional case of steato- cystoma simplex which was developed on the right parietal scalp.
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