Brain tumors are abnormal growths of cells in or around the brain. They can be primary (originating in the brain) or ...

Arachnoid cysts are benign, cerebrospinal fluid-filled sacs that typically arise from developmental anomalies in the arachnoid membrane. Although often discovered incidentally, these lesions can ...

Brain cancer is rare. Some forms are particularly uncommon, including choroid plexus tumors, pineal tumors, and hemangiomas. Brain cancers occur when an atypical group of cells in the brain ...

The outlook for stage 4 brain cancer depends on a wide range of factors. These include the type of brain cancer, how fast it grows, the tumor’s location on the brain, and an individual’s overall ...