Tufted angioma.

A 4-month-old girl developed coalescing, red-purple, firm plaques with irregular borders and superimposed papules in the left groin. The lesions were tender to palpation and they slowly expanded and became thicker over the next year. Histopathologic evaluation showed multiple, discrete lobules of tightly packed capillaries in a 'cannonball' pattern within the dermis, which confirmed the diagnosis of tufted angioma. The clinical and histopathologic features, natural history, and treatment options for tufted angiomas are reviewed; their relationship to kaposiform hemangioendotheliomas is discussed.