Surgical tumor removal is often used for both benign and malignant tumors. Usually, this is the only treatment needed for benign tumors. In many cases, benign tumors are merely observed and do not require removal. Malignant tumors may or may not be removed. They may also require additional treatments like radiation and chemotherapy. However, treatment of each type can vary depending on tumor size, location, patient age, stage of cancer for malignant tumors, and overall patient health.