Extra-axial medulloblastoma in the cerebellopontine angle.

Medulloblastoma is a common tumour of the posterior fossa, representing 20%–25% of all pediatric neoplasms.1,2 The tumour often occurs in the cerebellar vermis and at the apex of the fourth ventricle.2,3 It commonly presents with rapidly progressive clinical manifestations of raised intracranial pressure and cerebellar dysfunction.1,3 There are only a few reported cases of cerebellopontine (CP)-angle medulloblastoma in the literature, with most being intra-axial and occurring in the pediatric population. We present a rare case of primary extra-axial CP-angle medulloblastoma occurring in an adult.