Abstract
BACKGROUND: Surgery is indicated in cases of mesial temporal lobe epilepsy(MTLE)that are refractory to medical management. The inferior temporal gyrus (ITG) approachprovides access to the mesial temporal lobe (MTL) structures with minimal tissuedisruption. Reported neuropsychology outcomes following this approach are limited.OBJECTIVE: To report neuropsychological outcomes using an ITG approach to amygdalohippocampectomy (AH) in patients with medically refractory MTLE based on a prospectivedesign.METHODS: Fifty-four participants had Engel class I/II outcome following resection of MTLusing the ITG approach. All participants had localization-related epilepsy confrmed bylong-term surface video-electroencephalography and completed pre/postsurgical evaluations that included magnetic resonance imaging (MRI), Wada test or functional MRI, andneuropsychology assessment.RESULTS: Clinical semiology/video-electroencephalography indicated that of the 54patients, 28 (52%) had left MTLE and 26 (48%) had right MTLE. Dominant hemisphere resections were performed on 23 patients (43%), nondominant on 31(57%). Twenty-nine (29) hadpathology-confrmed mesial temporal sclerosis (MTS). Group level analyses found declinesin verbal memory for patients with language-dominant resections (P <.05). No significant decline in neuropsychological measures occurred for patients with MTS. Participantswithout MTS who underwent a language-dominant lobe resection exhibited a signifcantdecline in verbal and visual memory (P <.05). Nondominant resection participants did notexhibit signifcant change in neuropsychology scores (P >.05).CONCLUSION: Neuropsychology outcomes of an ITG approach for selective mesialtemporal resection are comparable to other selective AH techniques showing minimaladverse cognitive effects. These data lend support to the ITG approach for selective AHas an option for MTLE.
Original language | English (US) |
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Pages (from-to) | 833-841 |
Number of pages | 9 |
Journal | Neurosurgery |
Volume | 82 |
Issue number | 6 |
DOIs | |
State | Published - Jun 1 2018 |
Externally published | Yes |
Keywords
- Amygdalohippocampectomy
- Epilepsy
- Inferior temporal gyrus
- Neuropsychological outcomes
ASJC Scopus subject areas
- Surgery
- Clinical Neurology