Targetoid hemosiderotic hemangioma
Alerts and Notices
Important News & Links
Synopsis
Targetoid hemosiderotic hemangioma (THH), also known as targetoid hemosiderotic lymphatic malformation (THLM), is a benign lesion characterized clinically by a solitary central, brown-violaceous papule with or without a surrounding thin, pale area and ring of ecchymosis, creating a targetoid appearance. While THH was once thought to be of vascular origin, immunohistochemical data support its lymphatic origin, as THH stains positively for lymphatic markers including D2-40. Additionally, immunohistochemical studies have shown a pattern that is more consistent with a vascular malformation than a neoplasm, as implied by the term "hemangioma."
THH is a rare finding that tends to appear in young or middle-aged individuals. It has a predilection for the trunk and/or extremities. No definitive risk factors exist, although it is speculated that trauma may play a role in the development and flaring of these lesions.
THH is a rare finding that tends to appear in young or middle-aged individuals. It has a predilection for the trunk and/or extremities. No definitive risk factors exist, although it is speculated that trauma may play a role in the development and flaring of these lesions.
Codes
ICD10CM:
D18.01 – Hemangioma of skin and subcutaneous tissue
SNOMEDCT:
254790003 – Targetoid hemosiderotic hemangioma
D18.01 – Hemangioma of skin and subcutaneous tissue
SNOMEDCT:
254790003 – Targetoid hemosiderotic hemangioma
Look For
Subscription Required
Diagnostic Pearls
Subscription Required
Differential Diagnosis & Pitfalls
To perform a comparison, select diagnoses from the classic differential
Subscription Required
Best Tests
Subscription Required
Management Pearls
Subscription Required
Therapy
Subscription Required
References
Subscription Required
Last Reviewed:12/25/2021
Last Updated:01/17/2022
Last Updated:01/17/2022