Meningiomas are the most common benign tumors in the brain. They have clear boundaries, capsule, slow growth, and are insensitive to drugs, chemotherapy, and radiotherapy. Therefore, at the current level of medical technology, there is no drug that can control the growth of meningioma, and it can only be treated by craniotomy. Meningiomas tend to occur at superficial locations such as the convexity of the brain in the brain. All operations can achieve total removal of the tumor. The prognosis is good, and the tumor will not recur after surgery. It can be cured without radiotherapy and chemotherapy. But when the tumor is located in the deep part of the brain, the surrounding blood vessels and nerves are very dense, and the tumor will cause adhesion and wrapping to the blood vessels and nerves. The surgery may not be able to achieve the total removal of the tumor. At this time, radiotherapy is required to control the recurrence rate of the tumor and reduce the tumor volume, but the drugs have no obvious effect on it.
