Neuro Oncol 24 (Suppl 5): v1-v95, 2022. doi: 10.1093 / neuonc / noac202 Symptoms and Signs of Medulloblastoma Patients present most commonly with symptoms associated with increased intracranial pressure and cerebellar dysfunction, which may include vomiting, headache, nausea, visual changes (eg, double vision), and unsteady walking or clumsiness.