A vascular malformation is a type of birthmark, or congenital (present at birth) vascular growth ... A vascular malformation is also known as lymphangioma, arteriovenous malformations, and vascular ...

This is a 2-month old female with a history of a hemangioma on her right buttock since 2 weeks of age. The lesion began as a small birthmark and has continued to grow, and is now ulcerated.