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Dermatology clinic

Pearly papules on the thighs

Steven Kossard

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Abstract

A boy has developed pearly, umbilicated, firm papules on his thighs. What is the cause?

Article Extract

Case history

Over a six-month period, a 9-year-old boy developed on his thighs and pubic area a progressive number of 2 to 4 mm diameter pearly papules, some of which had a small central dimple. The papules were focally aggregated, and one lesion was obscured by an inflammatory reaction. Skin biopsy of the papule revealed an epithelium-lined canal containing numerous eosinophilic bodies that appeared to develop within the surrounding keratinocyte lining.

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