Is a brain tumor cancer?

There can be benign tumors in the brain like meningioma or acoustic neuroma. These tumors are not malignant, but can cause symptoms and complications, and are often treated with surgery or radiosurgery. There can be malignant tumors in the brain (cancer). These can be metastatic, or be of primary brain origin.

Good question: Tumors can be malignant or benign. A benign tumor is one that does not grow rapidly, does not infiltrate normal tissue, and does not metastasize or break off and spread to other parts of the body. However, in the brain a benign tumor can be malignant by position. If the tumor is located deep or in a very sensitive place, it can be very dangerous. Some brain tumors can just be easily cured.