[EEG findings in tumors of the 4th ventricle and the craniospinal transitional zone]

A total of 238 patients with space-occupying tumours in the region of the 4th ventricle and the cranio-spinal transitional region were examined electroencephalographically. In all cases, the findings were confirmed by an operation or autopsy. 219 tumours were confined to the 4th ventricle and another 7 patients showed tumours of the cranio-spinal transitional zone. Only in 10 patients of the first group and 2 patients with cranio-spinal tumours a normal EEG was recorded. The exact changes are shown in a table.