Hemangiomas are noncancerous growths that form from malfunctioning blood vessels. Learn how they work and what to do about them. Learn about treatment options for hemangiomas, clusters of extra blood vessels under the skin. Whether your child has an infantile hemangioma or congenital hemangioma, a team of experts at Seattle Children’s Vascular Anomalies Program will diagnose and treat it. Hemangiomas are common vascular growths that appear in infants and adults. Learn what causes them, how they change over time, and when treatment is needed. A liver hemangioma (he-man-jee-O-muh) is a noncancerous mass in the liver made up of a tangle of blood vessels. Liver hemangiomas are sometimes called hepatic hemangiomas or cavernous hemangiomas. Most liver hemangiomas are found during a test done for another condition. These liver masses are common. Around 20% of the population is thought to have them. People who have a liver hemangioma. A hemangioma is a type of birthmark and vascular abnormality and is the most common benign (noncancerous) tumor of the skin. A hemangioma or haemangioma is a usually benign vascular tumor derived from blood vessel cell types. The most common form, seen in infants, is an infantile hemangioma, known colloquially as a strawberry mark , most commonly presenting on the skin at birth or in the first weeks of life. A spinal hemangioma is a noncancerous tumor that grows on your spine. It usually doesn’t cause symptoms or need treatment. A hemangioma is a common vascular birthmark, made of extra blood vessels in the skin. It is a benign (non-cancerous) growth. Hemangiomas may occur anywhere on the body. There are three main types of hemangioma: superficial (on the surface of the skin), deep (under the skin) and mixed. A hemangioma (he-man-jee-O-muh), also known as an infantile hemangioma or hemangioma of infancy, is a bright red birthmark. It looks like a rubbery bump or flat red patch and is made up of extra blood vessels in the skin. The mark shows up at birth or in the first month of life. Know about the hemangioma types, symptoms, causes and treatment. Learn about the diagnosis and lifestyle tips for hemangioma and more.