The human skull is comprised of bones and cartilage that form the face and the cranium. The cranium bones are located at the top of the skull. The bottom of the cranium is composed of five bones that also form the roof of the nasal cavity, eye socket, bones that surround the inner ear, and some of the sinuses. The skull base is complicated are many openings that the many blood vessels, spinal cord, and nerves all pass through the region. Normally, Skull base surgery may be done by removing both cancerous and noncancerous extra parts, and abnormalities found on the underside of the brain or in...