The usual prognosis of meningioma is good, according to UCLA Neurosurgery. About 85 percent of the tumors are curable with surgery. The key to a successful outcome is if the tumor is located in a portion of the brain that is more easily accessible.
Other factors that determine the prognosis of a patient with meningioma is how much of the tumor can be removed and the skill level of the surgeon, UCLA Neurosurgery reports. Surgery can range from very complicated to straightforward, depending on the size and location of the tumor. Meningiomas that are located on the brain's surface and haven't invaded blood vessels are more likely to be removed successfully.
Surgery also allows the surgeon to take tissue from the tumor to determine a grade for the meningioma. Three-quarters are grade 1, slow-growing benign tumors. Grade 2 tumors are also slow-growing but may recur after surgery, and grade 3 are cancerous, fast-growing tumors.
If surgery is not an option, radiation therapy stops the tumor from growing in about 80 percent of patients. Radiation therapy is often recommended in patients over age 50 or patients with tumors that cannot be completely removed.
Depending on the location and size of the tumor, some meningioma patients may opt for observation, states UCLA Neurosurgery. Since many tumors grow slowly, observation may be the choice of elderly patients or patients with small tumors who have no symptoms.