Syringomyelia is frequently associated with Chiari malformation or one of many otherpathological conditions. Its co-occurrence with medulloblastoma is rare, and to our knowledge, only 4 patients have been reported, although some reports have documented on syringomyelia associated with intracranial processes or intramedullary tumor. The authors describe an unusual case of asymptomatic thoracic syringomyelia complicated by an intrasyringal hemorrhage in a child with medulloblastoma. This report illustrates that, although unusual, syringomyelia is a potential complication in the natural history of medulloblastoma, and the authors consider the possible pathogenesis of syrinx enlargement.

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