Outcomes and Indications of Corpus callosum Section for Intractable Seizure Control

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Abstract
Callosotomy (CCS) was performed in 9 cases of rigorously classified drug-refractory epilepsy not eligible for focal cortical resection. Complete CCS was carried out in two stages in 8 patients. 1 case had an anterior CCS only. None of the 9 patients has become seizure free. In 7, seizure frequency has diminished by a factor of 3–60 for at least one seizure type. Drop attacks in 2 cases have ceased. Clinical seizure patterns appeared more helpful in predicting outcome than preoperative EEG and stereoelectroencephalographic studies. Complete CCS may result in prolonged behavioral disturbances in the areas of language, hemisphere competition and attention-memory sequencing with impact on the sphere of daily living.

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