A hemangioma is an abnormal buildup of blood vessels in the skin or internal organs. Two types of hemangiomas are discussed here:
Hemangioblastomas are most often found in the lowest part of the brain, the posterior fossa (brain stem and cerebellum). However, they can also occur in the cerebral hemispheres, the spinal cord, or even the retina. Hemangiopericytomas arise in the meninges, or coverings of the brain and spinal cord.
The most common symptoms of hemangioblastoma include headache, nausea and vomiting, gait disturbances, and poor coordination of the limbs. Symptoms of hemangiopericytoma depend on the location of the tumor. Most patients usually have symptoms for less than a year before diagnosis.
Surgery is the standard treatment for hemangioblastoma and hemangiopericytoma. Incompletely removed tumors or tumors attached to the brain stem might be treated with a form of focused radiation.
Hemangioblastomas represent about 2% of all primary brain tumors. About 10% of patients with hemangioblastoma have VonHippel-Lindau disease. If you have VonHippel-Lindau disease, you are more likely to be affected by this type of tumor, as well as tumors of the liver, pancreas, and kidneys.
Hemangioblastoma can occur at any age, but is most commonly found in people who are around 40. Hemangiopericytomas tend to affect younger people.