An intracranial [[tumor]] is any abnormal [[mass]] of [[tissue]] located within the cranial cavity. These tumors can originate from [[brain tissue]] ([[primary brain tumor]]s), or they may spread from cancers elsewhere in the body (metastatic brain tumors). Intracranial tumors may be [[benign]] or [[malignant]], and their clinical effects depend on their size, location, growth rate, and involvement of critical brain structures. Common symptoms include headache, seizures, cognitive changes, and neurological deficits.