Embolization. In this procedure, the blood supply to the tumor is closed off. This is a minimally invasive procedure where small particles are injected into the blood vessels to block them off. Sclerotherapy is a similar procedure where chemical agents are used to close off the vessels. These procedures can be very helpful in shrinking the tumor and decreasing pain. Often, however, the tumor will regrow its blood supply over time after these procedures. Embolization is also sometimes used prior to surgery to reduce the risk of heavy blood loss.
In the treatment of a brain cavernous hemangioma, neurosurgery is usually the treatment chosen.  Research needs to be conducted on the efficacy of treatment with stereotactic radiation therapy , especially on the long-term.  However, radiotherapy is still being studied as a form of treatment if neurosurgery is too dangerous due the location of the cavernoma. Genetic researchers are still working on determining the cause of the illness and the mechanism behind blood vessel formation.  Clinical trials are being conducted to better assess when it is appropriate to treat a patient with this malformation and with what treatment method.  Additionally, long term studies are being conducted because there is no information related to the long-term outlook of patients with cavernoma. A registry exists known as The International Cavernous Angioma Patient Registry collects information from patients diagnosed with cavernoma in order to facilitate discovery of non-invasive treatments.