A skull base tumor is a mass that forms near the base of your skull. They might develop from the bones of the skull, the lining of the brain, or inside the nose. Where Are Skull Base Tumors Located?

The skull base (or cranial base) is the region where the nose and sinuses, with the rest of the head/neck, meet the brain. For patients with malignant tumors involving the nose, sinuses and skull base ...