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A boy with intractable siezures that had progressed to about 30 a day underwent complete disconnection of the cerebral hemispheres in January 1972. Using microsurgical technique, we followed the path described by Bogen and Vogel requiring division of the corpus callosum from rostrum to splenium, the anterior commisure, one fornix, and hippocampal commissure. Postoperative recovery was complicated by aseptic meningitis, which was treated with dexamethasone and, later by hydrocephalus, which was reduced by ventriculoperitoneal shunt. The patient improved rapidly and remains well. We believe that disconnection is a preferred alternative to hemispherectomy for control of intractable seizures arising from early damage to one cerebral hemisphere.

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