The therapeutic criteria according to tomographic findings are reviewed. 10 children, 6 male and 4 female, with porencephalic congenital cysts were studied. Early symptoms began within the first 6 months of life in 9 cases, and at the age of 5 years in 1. The most frequent symptoms were: seizures in 3; motor deficit in 5; retarded psychomotor development in 7; endocranial hypertension syndrome in 7; symmetric macrocrania in 7; paresis ofthe motor ocular nerves in 4. Preoperative studies: (1) X-ray films- 1 each patient – showed diastasis of sutures in 6 and cranial asymmetry in 2. (2) Electroencephalograms – 6 patients