TARGETOID HEMOSIDEROTIC HEMANGIOMA
By Gary M. White, MD
The targetoid hemosiderotic hemangioma (THH) (aka hobnail hemangioma) is a solitary vascular tumor which clinically has a "targetoid" appearance.
- It is postulated that both solitary angiokeratomas (SAK) and THH are variants of the same process in which trauma induces a dilatation of vascular elements. THH in general is larger than an SAK [JAAD 1999;41;215].
There is a central vascular papule with a surrounding ecchymotic or brown ring that can enlarge or disappear.
If there is any question of the possibility of an atypical pigmented lesion, a biopsy should be performed. Otherwise, no treatment is needed. Shave biopsy with cautery of the base or simple excision may be performed.
Dermatology Online Journal 18 (7): 11
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