The Neuro-Oncology Program provides expert care for adult patients with primary brain tumors and neurological complications of cancer. Brain tumors are abnormal growths in the brain that can be either cancerous (malignant) of noncancerous (benign). The effects on the brain of malignant and benign brain tumors are very similar and can ause the same types of problems depending upon the type of tumor and where it is located in the brain.