A hemangioma is an abnormal buildup of blood vessels in the skin or internal organs.
About 30% of hemangiomas are present at birth. The rest appear in the first several months of life. The hemangioma may be: In the top skin layers (capillary hemangioma) Deeper in the skin (cavernous hemangioma) A mixture of both
A red to reddish-purple, raised sore (lesion) on the skin A massive, raised tumor with blood vessels Most hemangiomas are on the face and neck.