Brain cancer is due to the growth of abnormal tumor cells in the brain. Similar tumors occur in the spinal cord. While benign tumors generally do not invade other tissues, malignant (cancerous) tumors contain fast-growing cells that can spread to surrounding healthy brain tissue. Both benign and malignant tumors can cause symptoms by putting pressure on surrounding structures; however, malignant tumors tend to invade and destroy adjacent structures. Brain tumors fall into two categories: primary, which originates in the brain, and metastatic, the more common type, which begins elsewhere in the body and spreads to the brain.
Most brain tumors have no known cause and known risk factors are few.
Brain cancer symptoms vary between individuals. People with these symptoms should consult their physician:
Other than reducing radiation exposure, there are no known ways to prevent primary brain or spinal cord tumors. However, in adults, certain lifestyle changes, such as maintaining a healthy weight and quitting smoking, decrease the risk of other cancers in the body which could potentially spread to the brain.
Treatment for brain cancer is determined by many factors including tumor type, size and location in the brain, whether it is newly diagnosed or a recurrence, the tumor’s specific genetic makeup, and your overall health. Brain tumors can be very difficult to treat; therefore, many patients require a team of physicians including a neurosurgeon, neurologist, radiation oncologist, medical oncologist or neuro-oncologist, and an endocrinologist.
Surgery is the main treatment for brain tumors if located within the membranes covering the brain or in an area where removal would not damage the surrounding areas. Brain tumors located in or near sensitive areas can make total removal riskier, or occasionally impossible.
Several other treatments may be used such as radiation therapy, radiosurgery, proton therapy, chemotherapy, targeted therapy, or alternating electric field therapy. Proton therapy is particularly useful in tumors deep in the brain or near sensitive areas due to the accuracy of the proton beam. Most often, a combination of treatments is used to provide the best chance of disease control.
Source: American Cancer Society, Centers for Disease Control and Prevention, National Brain Tumor Society, and National Cancer Institute
