Positional nystagmus of the benign paroxysmal type with posterior fossa medulloblastoma.
D000328:Adult; D003388:Cranial Fossa, Posterior; D006801:Humans; D008297:Male; D008527:Medulloblastoma / Q000150:complications*; D009759:Nystagmus, Pathologic / Q000150:complications*; D012888:Skull Neoplasms / Q000150:complications*