XXXX : a 24-year experience.

@entity1 @entity1276 @entity428 @entity5 @entity816 @entity76 @entity463 @entity2055
INTRODUCTION: @entity76 are the most @entity5 of the CNS. Seventy to eighty percent are found in @entity1 . METHODS AND RESULTS: We report on 38 @entity1 under 18 who had @entity76 in the posterior fossa and were treated by a multidisciplinary team in our Neurosurgical Department from January 1974 to December 1997. We included all @entity1 in whom the histopathological diagnosis was @entity816 , regardless of @entity5 . The diagnostic methods used were pneumoventriculography, cranial X-rays, CT scan, and MRI. All @entity1 were treated surgically. Neither radiotherapy nor chemotherapy was indicated in @entity1 with pilocytic or @entity816 . A greater prevalence was observed in female (25/38; 66%) than in male (13/38; 34%) @entity1 . Histopathological results revealed 27 (71%) @entity816 , 8 (21%) diffuse @entity816 , 1 (2%) anaplastic @entity463 . These @entity5 were more frequently located in the right cerebellar hemisphere; @entity428 was the most frequent form of clinical presentation. Total @entity5 resection was obtained in 29 (83%) cases and subtotal resection in 9 (17%). In 6 (16%) cases, ventriculoperitoneal shunts were placed to control persistent @entity1276 after @entity5 excision. CONCLUSION: The most frequent complication was @entity2055 . The mortality rate was 8.5%.
