This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Anatomy
Most common intracranial malignancy is 
Select and explain. 
A. Glioblastoma multiforme, B. Ependymoma, C. Choroid angioma, D. Pinealoma
A: Glioblastoma multiforme
Answer: A: Glioblastoma multiforme 
Explanation: Glioblastoma multiforme (GBM) is the most common and deadliest of malignant primary brain tumors in adults and is one of a group of tumors referred to as gliomas. Classified as a Grade IV (most serious) astrocytoma, GBM develops from the lineage of star-shaped glial cells, called astrocytes, that suppo nerve cells. GBM develops primarily in the cerebral hemispheres but can develop in other pas of the brain, brainstem, or spinal cord. Refer Robbins page no 1308