angioma

n. tumor mainly consisting of blood vessels

Angiomas are benign tumors that are made up of small blood vessels. They usually appear at or near the surface of the skin. Angiomas may appear anywhere on the body, and aren't considered dangerous depending on their location. However, they may be present as symptoms of another more serious disorder, such as cirrhosis. When they are removed, it is generally for cosmetic reasons.
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Angioma /an·gi·o·ma/ a tumor whose cells tend to form blood vessels or lymph vessels ; a tumor made up of blood vessels or lymph vessels. [more]Angioma - Community and Resources

Noun
1. a tumor consisting of a mass of blood or lymphatic vessels
(hypernym) tumor, tumour, neoplasm
(hyponym) hemangioma, haemangioma

n. angioma, tumor mainly consisting of blood vessels