hemangioma

A hemangioma is a benign tumor composed of blood vessels, typically appearing as a reddish or purplish raised area on the skin. These tumors are made of endothelial cells, which line blood vessels, and form spaces filled with blood.12

Infantile hemangiomas are the most common tumors in infants and usually occur on the body's surface, though they can also appear in mucous membranes or internal organs. They grow rapidly in the first few months of life and then typically shrink and resolve by around age 10. While usually harmless, in rare cases, they can affect vision, hearing, or cardiac output if they interfere with vital organs. Treatment is seldom needed, but medications, laser therapy, or surgery may be used for hemangiomas that pose health risks.2