4.5 Article

The Anterior Trans-Superior Temporal Gyrus Approach for Selective Amygdalohippocampectomy

Journal

WORLD NEUROSURGERY
Volume 159, Issue -, Pages E244-E251

Publisher

ELSEVIER SCIENCE INC
DOI: 10.1016/j.wneu.2021.12.034

Keywords

Amygdalohippocampectomy; Epilepsy; Gyrus; Neurosurgery; Superior; Temporal

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This study reported the results of an innovative surgical approach, the anterior trans-superior temporal gyrus approach, for selective amygdalohippocampectomy in patients with drug-refractory temporal lobe epilepsy. The approach was found to be feasible, fast, and safe, with a high rate of seizure freedom and minimal complications.
BACKGROUND: Different surgical approaches have been described for selective amygdalohippocampectomy in patients with pharmacoresistant temporal lobe epilepsy. The aim of this study was to report the results of the innovative anterior trans-superior temporal gyrus approach in a single-center series. METHODS: Patients' characteristics, postoperative outcomes, and complications were reviewed in a series of 8 consecutive patients with temporal lobe epilepsy operated on using the anterior trans-superior temporal gyrus approach between November 2015 and April 2017. RESULTS: Over a mean 2.5-year follow-up, 7 of 8 patients (87.5%) remained seizure-free (Engel class I). Only 1 patient (12.5%) was not cured (Engel class III) with no clear explanation for treatment failure. Mean operative time was 237 minutes, which was 80 minutes shorter compared with the classic transsylvian approach. No perioperative deaths were recorded and there were no visual field defects or visual acuity impairments secondary to the approach. One patient experienced a left posterior thalamocapsular stroke. CONCLUSIONS: The anterior trans-superior temporal gyrus approach is feasible, fast, and safe for selective amygdalohippocampectomy in patients with drug-refractory temporal lobe epilepsy. This approach allows preservation of the optic radiation but cuts part of the uncinate fasciculus and potentially the anterior aspect of the anterior bundle of the middle longitudinal fasciculus.

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