[Results of combined treatment of neoplasms of the posterior cranial fossa in children].

The effectiveness of combined treatment of posterior fossa tumours was analysed using the clinical material of a neurosurgery department. The material comprised 242 patients treated in the years 1980-1987 with 211 suboccipital craniotomies performed. In cases of cerebellar astrocytoma one-year survival rate was 9% and five year survival in 89% of cases. In the group of medulloblastoma treated in the period 1980-1982 the one-year survival rate was 75%, three-year 39% and five-year 25%. In the group treated in the years 1985-1987 the one-year survival rate was 95% and three-year was 60%. In ependymoma cases the one-year rate was 90%, three-year was 40% and five-year--33%. The use of combined treatment in cases of ependymoma and medulloblastoma improved significantly the therapeutic results.