Current neurosurgical treatment of medulloblastomas in children. A report from the Children's Cancer Study Group

Pediatric Neuroscience
A L AlbrightD Hammond

Abstract

To determine the current neurosurgical treatment of children with medulloblastomas, we reviewed the operative reports and neurosurgical report forms from 141 children with posterior fossa medulloblastomas treated on two current Children's Cancer Study Group (CCSG) protocols, CCG-921 for high-stage and CCG-923 for low-stage medulloblastoma. Most medulloblastoma operations were performed in major medical centers: 61% of the operations were performed in CCSG member institutions, 23% in CCSG affiliates and 16% in other institutions. The tumor T stage distribution was as follows: T1-4%, T2-15%, T3A-35%, T3B-36%, and T4-10%. Tumors infiltrated the brainstem in 38% of cases and were associated with hydrocephalus in 91% of cases. Hydrocephalus was managed by external ventricular drains in 50% and by shunts in 60%. Adjunctive instruments (e.g., microscope, ultrasonic aspirator) were used in 93% of the operations. Tumor removals were as follows: biopsy only 3%, partial removals 13%, subtotal removals 13%, near total removals 41% and gross total removals in 40%; 90% or more of the tumor was removed in 81% of the operations. Forty-seven percent of the operations were performed by pediatric neurosurgeons. Near total and gross total removals...Continue Reading

Citations

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