Answer to last month's Clinical Quiz

Question:
This middle-aged woman presented with multiple skin coloured nodules over her limbs, trunk and external genitalia for more than 10 years. The lesions were asymptomatic. The number of lesions had been progressively increasing.

Steatocystoma is thought to represent a naevoid malformation of the pilosebaceous duct. Although it can present with a solitary lesion, multiple lesions are the more usual presentation. The chest is the predilected region of involvement. It can be sporadic or inherited (autosomal dominant). The typical lesions are asymptomatic skin coloured small nodules measuring from 3mm to 3cm. Pain may sometimes result from secondary infection or rupture in skin (mostly related to self inflicted trauma). Treatment is not indicated. The extent of involvement shown in the current clinical photo is unusual. The painless nature of this condition helps differentiating it from painful conditions like leiomyoma, angiolipoma, and other painful skin tumours.