What are hemangiomas?
Hemangiomas are benign vascular tumors (a collection of tiny blood vessels) that occur in 2 to 3 percent of all infants. Although hemangiomas may not be visible at birth, by age one up to 12 percent of children will have a hemangioma. The majority of hemangiomas regress by age 5 to 7 years. Hemangiomas are divided into three subgroups based on the size of the vessels. They can range from small and insignificant to large and disfiguring with potentially serious health consequences.