An unusual lesion on the nose: microvenular hemangioma
Keywords:
vascular anomaly, hemangiomaAbstract
Microvenular hemangioma (MVH) is an acquired, benign type of hemangioma that usually manifests itself as a solitary, slowly growing, red to violaceous, asymptomatic papule, plaque or nodule. It is typically located on the trunk or extremities of young adults. It can be difficult to differentiate MVH from other types of hemangioma and Kaposi sarcoma. Herein we report a case of MVH unusual for its location, age of onset, and morphologic features.
A 62-year-old man complained of an asymptomatic, bluish-red discoloration on the tip of his nose that had been present for two years. Dermatologic examination showed a violaceous patch 2 x 2 cm in diameter with indistinct borders. Incisional biopsy revealed irregularly branched small or medium-sized vascular spaces lined with benign endothelial cells, positive for CD34 and negative for HHV-8.
MVH is a rare lesion, and less than 70 cases have been published to date. A review of 40 reported cases revealed that 15% of MVH patients were over 40 years of age and only 3% of the cases showed macules or patches. A literature survey showed only two cases of MVH located on the facial region, one on the chin and the other on the cheek. Our case was unique for its location and interesting for other rarely encountered features. MVH should be considered in the differential diagnoses of vascular lesions on nasal skin.
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