Overview of Intracranial Tumors By Mark H Bilsky, MD, Weill Medical College of Cornell University Reviewed / Revised May 2023 View Patient Education Classification Pathophysiology Symptoms and Signs Diagnosis Treatment Cranial Radiation Therapy and Neurotoxicity Topic Resources Brain Metastases Common Localizing Manifestations... Common Brain Tumors by Age Intracranial tumors may involve the brain or other structures (eg, cranial nerves, meninges).