neurologic disorders
Overview of Intracranial Tumors
Classification of Intracranial Tumors
There are 2 types of brain tumors: Primary brain tumors: Originate in the brain in the brain parenchyma (eg, Gliomas , which include Secondary brain tumors (brain metastases): Originate in tissues outside the brain and spread to the brain Brain metastases are about 10 times more common than primary tumors. Brain metastases are about 10 times more common than primary brain tumors. Type of tumor varies somewhat by site (see table Common Localizing Manifestations of Primary Brain Tumors ) and patient age (see table 