Eccrine angiomatous hamartoma.

This is the case of a 13 year-old female evaluated for a congenital skin lesion on the left buttock. Physical examination revealed a well-defined light brown patch with a 4mm papule on the center. A skin biopsy revealed an increased number of eccrine glands associated to a proliferation of vascular channels, particularly capillaries. These findings are consistent with a diagnosis of eccrine angiomatous hamartoma.