<prompt> A 10-year-old girl develops ataxia and hydrocephalus. CT scan shows a midline cerebellar mass. Which of the following is the most likely diagnosisMeningiomaMedulloblastomaNeurofibromaAstrocytoma  <response>: Medulloblastoma is a cerebellar midline tumor that presents commonly in the pediatric population. These tumors are rapidly growing and often cause hydrocephalus. Ref:- Harsha Mohan textbook of Pathology 