Abstract
Medulloblastoma (MB) is rare in adults and treatment guidelines are consequently not well-established. Few modern series have reported long-term follow-up and treatment sequelae. We examined long-term outcomes of adult MB patients at one institution. Records of 29 consecutive patients (18 male, 11 female) aged ≥ 18 years who received radiotherapy (RT) for primary MB from 1990 to 2016 were reviewed. Median age at diagnosis was 28 years (range 18–72 years). Seventeen patients were standard risk and 12 were high risk. Nineteen patients had gross total resection, seven had subtotal resection, and three had biopsy only. Median craniospinal irradiation and boost doses were 36 Gy (range 23.4–39.6 Gy) and 55.8 Gy (range 54–59.4 Gy), respectively. Of 24 patients receiving chemotherapy, 20 received concurrent + adjuvant and 4 received adjuvant only. At median follow-up of 9.0 years (range 1.1–20.5 years), five patients recurred: four in the posterior fossa and one in both the posterior fossa and above the tentorium. Five patients died: two of disease progression and three after possible treatment complications (seizure, lobar pneumonia, and multifactorial sepsis). At last follow-up, 23 patients were alive with no evidence of disease. Long-term effects include executive dysfunction (n = 17), weakness/ataxia (n = 16), and depression/anxiety (n = 13). Kaplan–Meier estimates of 10-year overall survival and failure-free survival are 83% (95% confidence interval [CI] 59–93%) and 79% (CI 55–91%), respectively. Despite encouraging disease control in this cohort, long-term sequelae may limit quality of life. Multimodality pediatric regimens using lower RT doses may be considered to reduce treatment-related morbidity.
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Funding was provided by the National Institutes of Health/National Cancer Institute Cancer Center Support Grant (P30 CA008748). This work is also supported by a gift from Jack and Susan Rudin.
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M.M.S. reports personal fees from Aesculap, Sanofi, and Baxter. I.J.D. reports personal fees from Bayer, Bristol-Myers Squibb, Ipsen, Eisai, and Pfizer, and grants from Genentech and Parexel (GSK, Novartis). L.M.D reports personal fees from Novartis, GlaxoSmithKline, and Celgene. All payments are outside the submitted work. Other authors declare no conflicts.
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De, B., Beal, K., De Braganca, K.C. et al. Long-term outcomes of adult medulloblastoma patients treated with radiotherapy. J Neurooncol 136, 95–104 (2018). https://doi.org/10.1007/s11060-017-2627-1
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DOI: https://doi.org/10.1007/s11060-017-2627-1