[Supratentorial and infratentorial localization of brain tumors in various periods in childhood].

The authors evaluated a group of 220 children (119 boys and 101 girls) aged 11 months to 15 years with histologically confirmed brain tumours hospitalized at the Clinic of Child Neurology, Childrens Hospital, Brno in 1953-1986. Tumours were diagnosed in infants 15 times, in 41 toddlers, in 72 preschool children, in 56 young school children and in 36 older school children. The ratio of supra- and infratentorial localization in infants was practically identical, in toddlers and preschool children there was a marked predominance of infratentorial tumours, in younger school age this localization was slightly predominating, in older school age supratentorial tumours predominated. The most frequent incidence of tumours throughout childhood was in the posterior cranial fossa from the cerebellar vermis, medulloblastomas being the most frequent type. In the supratentorial localization tumours in the temporal lobe predominated, astrocytomas being the most frequent type.