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Superficial Hemosiderotic Lymphovascular Malformation (Hobnail Hemangioma): A Report of Six Cases
Author(s) -
Joyce Joel C.,
Keith Phillip J.,
Szabo Sara,
Holland Kristen E.
Publication year - 2014
Publication title -
pediatric dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.542
H-Index - 73
eISSN - 1525-1470
pISSN - 0736-8046
DOI - 10.1111/pde.12294
Subject(s) - medicine , hemangioma , histogenesis , lesion , pathology , lymphatic system , lymphovascular invasion , immunohistochemistry , cancer , metastasis
Hobnail hemangioma ( HH ), initially termed targetoid hemosiderotic hemangioma, is a rare, often solitary lesion classically characterized by a central brown or violaceous papulonodule surrounded at times by an ecchymotic halo. This lesion is typically found on the trunk or limbs of children or young to middle‐aged adults. Numerous case reports have found HH s to have a reproducible histologic appearance. Although the exact histogenesis of these lesions is unknown, multiple recent immunohistochemical studies suggest a lymphatic origin of these lesions. We present six cases of children with HH s with classic histology but with variability in their clinical appearance. Because the clinical presence of a targetoid halo is inconsistent and the hobnail phenomenon is not specific, we favor the designation of superficial hemosiderotic lymphovascular malformation instead of HH or targetoid hemosiderotic hemangioma as a more unifying term for this rare clinical entity. By eliminating confounding terminologies (in this case, incorporation of “hemangioma” in the name of this entity), we also hope to encourage a swifter change in practice to move away from erroneous diagnostic considerations.