Focal Epilepsy

Abstract
THE neurologists and neurosurgeons of the Massachusetts General Hospital have long been interested in determining the causes of epileptic seizures in patients both acutely and chronically affected. Therefore, all epileptic patients admitted to the wards have been studied with special care for evidence of focal compression or scarring of the brain. Air studies, by either pneumoencephalography or ventriculography, have been performed routinely in these patients, and electroencephalography since 1937. We have selected the decade 1935–1944 for statistical review because it gives a period extending from twelve to a minimum of two years for the evaluation of surgical results. These patients . . .

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