Brain cancer creates malignant tumors that can kill healthy brain tissue, press on the brain, and cause a host of life-threatening problems. If possible, your doctor will usually do surgery to remove the whole tumor, or as much as can be safely removed without harming the rest of the brain. In some cases, you may need radiosurgery (which uses tight beams of radiation) instead of conventional surgery. In most cases, your doctor will recommend radiation and chemotherapy in addition to surgery.
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Honor Society of Nursing (STTI) answered
Surgery can treat brain cancer by allowing for removal of the malignant tissue. Depending on the type and extent of the tumor, this can be curative. However, sometimes additional treatment is needed, such as radiation/radiosurgery and chemotherapy.