The purpose of this work is to review the result of radiotherapy in the treatment of @entity2946 in pediatric @entity1 . Between 1986 and 1998, 66 @entity1 (45 @entity1 and 21 @entity1 ) received postoperative irradiation in our institute. Their mean age was 8.29 years. Irradiation was performed by linear accelerator, 36 Gy were applied in the high risk group (partial @entity5 resection, @entity5 cell positivity in the liquor, @entity3 within the central nervous system) and 30 Gy in the low risk group (total @entity5 resection, negative liquor cytology, no @entity3 within the central nervous system) on the entire cerebrum and spinal cord. This was followed in both groups by the application of 20-20 Gy boost irradiation on the posterior scala. Studying the survival it has been found that the surgical radicality did not significantly influence the survival chances of @entity1 , however, with the increase in the @entity5 size the survival chance significantly decreases (p = 0.03). When predicting life expectancy, however, the stage of @entity5 , the age of @entity1 , the risk group and the M stage yielded essential information. At the age of 8 years and less, the rate of survivors is 67.6%, for those over 8 years is 75.9% (p = 0.21), however the younger age was not significant. The appearance of @entity3 considerably deteriorates the chances of survival (from 81.5% to 66.7%, p = 0.02). In the low risk group of @entity1 the 5-year survival is 80%, while in the high risk group it is significantly lower, 67.4% (p = 0.04).

Postoperative radiotherapy of XXXX .

@entity1 :: ('9606', 'Species') :: ['children', 'patients', 'girls', 'boys'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity2946 :: ('MESH:D008527', 'Disease') :: ['medulloblastoma'] @entity3 :: ('MESH:D009362', 'Disease') :: ['metastases']
@entity2946 :: (MESH:D008527,Disease) :: ['childhood medulloblastomas']
