Posterior fossa medulloblastoma in children and young adults (0-19 years): survival and performance

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Abstract
The objective of this study was to present survival data and outcome status in the long-term survivors of a consecutive series of 111 children and young adults treated for posterior fossa medulloblastoma in our departments from 1960 to 1997. The total surgical mortality was 13%. The surgical mortality rate declined significantly during the time period overall, from 23% before 1970 to 0% after 1990. The 5-year survival rate for patients treated between 1960 and 1973 was 0%, while 5-year survival for patients treated after the introduction of systematic craniospinal radiation in 1974 was 53% . Thirty-four patients were alive at the close of this study, with a mean observation time of 13.5 years. Over half, 61%, of the patients had one or more major deficits/problems with respect to learning ability, power of locomotion, sociability, hobbies and relationships with the opposite sex. A younger age at the time of treatment was correlated with larger deficits/problems in these variables. The correlation between young age at the time of treatment and short final height was significant. The frequency of a second neoplasm was 14%. In all but 3 cases the major cause of permanent deficits/problems was radiation therapy.

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