Description

A brain tumor is an abnormal growth of cells in the brain. Tumors can be primary (originating in the brain) or secondary/metastatic (spread from other organs like lung, breast, or kidney). 🔹 Types of Brain Tumors 1. Based on Origin Primary Brain Tumors Gliomas (astrocytoma, glioblastoma, oligodendroglioma) Meningioma Pituitary adenoma Schwannoma (e.g., acoustic neuroma) Secondary/Metastatic Tumors Spread from other cancers (lung, breast, melanoma, kidney) 2. Based on Location Supratentorial: Above the tentorium cerebelli; affects cerebrum Infratentorial: Below the tentorium; affects cerebellum & brainstem 🔹 Causes / Risk Factors Genetic mutations Radiation exposure Family history (rare) Immunodeficiency (rare) 🔹 Symptoms Headache: Often worse in morning or with Valsalva maneuver Nausea and vomiting Seizures Neurological deficits: Weakness, sensory loss, vision or speech problems Cognitive or personality changes Balance/coordination problems (posterior fossa tumors)

Filter tags