This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Childhood Tumors, Subject name: Pediatrics
Medulloblastoma exclusively occurs in the: 
Select and explain. 
A. Medulla, B. Cerebellum, C. Cerebral hemispheres, D. Spinal cord
B: Cerebellum
Answer: B: Cerebellum 
Explanation: b. Cerebellum(Ref: Nelson's 20/e p 2458, Ghai 8/e 612-613)Medulloblastoma is a cerebellar tumor occurring predominantly in males and at a median age of 5-7 yr.CT & MRI show a solid, homogeneous, contrast enhancing 4th ventricular obstruction & hydrocephalus.