Clinical and Laboratory Investigations
Superficial Hemosiderotic Lymphovascular Malformation (Hobnail Hemangioma): A Report of Six Cases
Article first published online: 6 MAR 2014
© 2014 Wiley Periodicals, Inc.
Volume 31, Issue 3, pages 281–285, May/June 2014
How to Cite
Joyce, J. C., Keith, P. J., Szabo, S. and Holland, K. E. (2014), Superficial Hemosiderotic Lymphovascular Malformation (Hobnail Hemangioma): A Report of Six Cases. Pediatric Dermatology, 31: 281–285. doi: 10.1111/pde.12294
- Issue published online: 24 APR 2014
- Article first published online: 6 MAR 2014
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 HHs 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 HHs 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.