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A case of hobnail hemangioma
( Hyoung Jin Park ) , ( Hye Jin Ahn ) , ( June Hyuck Yim ) , ( Tae In Kim ) , ( Ki Heon Jeong ) , ( Min Kyung Shin )
UCI I410-ECN-0102-2017-510-000080742
This article is 4 pages or less.

Hobnail hemangioma, also known as targetoid hemosiderotic hemangioma, is a rare solitary benign vascular tumor and histologically, characterized by a dilated vascular structures in the superficial dermis lined by prominent hobnail endothelial cells. The lesion typically presents as a small violaceous papule with a surrounding pale area and peripheral ecchymotic rim resulting in a targetoid appearance. The halo expands peripherally and eventually disappears leaving only the central papule over time. We report a case of 83-year-old female who presented with solitary 1.5x1.5 cm sized erythematous patch and central crust without targetoid appearance on the right thigh of 2 years’ duration. Skin biopsy from the lesion showed proliferation of varying sized vascular channels lined by a single layer of endothelial cells with focal papillary projections and hobnail appearance in the superficial dermis. The patient was diagnosed with hobnail hemangioma and surgically removed without any evidence of recurrence at 6 months.

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