Hobnail hemangioma of the skin in a juvenile patient

Abstract

Hobnail hemangioma is a rare, benign, vascular lesion with peculiar but commonly misleading morphology, located mostly on the extremities or trunk, and affects young and middle-aged adults with a slightly male predominance. A new typical case in a 17-year-old girl is presented. A single, small, painless skin lesion appeared in an early childhood on the lateral part of the right thigh, and was linked with scratching a previous pigmented lesion. Microscopic examination of the completely removed lesion revealed typical morphology. Prominent endothelial cells were podoplanin-negative and CD34-positive. There was no recurrence after four years follow-up.