Purpose: Medulloblastoma is a rare tumor in adults and the use of adjuvant chemotherapy in average risk patients is debated.
Methods: Patients included in our study were ⩾16 years of age, had histologically confirmed medulloblastoma, and underwent adjuvant radiotherapy with or without chemotherapy. Average risk was defined according to the Chang classification.
Results: We included 48 average-risk patients. Median follow-up was 151.5 months (95% confidence interval, 124.5-178.5). Both progression-free survival (PFS) and overall survival (OS) were significantly influenced by adjuvant chemotherapy (PFS: hazard ratio [HR], 0.334, = 0.05; OS: HR, 0.187, = 0.017) and by receiving the treatment in a referral center (PFS: HR, 0.250, = 0.008; OS: HR, 0.295, = 0.038).
Conclusions: Treating patients with average-risk medulloblastoma in a referral center improves both PFS and OS, does adding adjuvant chemotherapy.
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