TY - JOUR

T1 - Surgical outcome of temporal plus epilepsy is improved by multilobar resection

AU - Barba, Carmen

AU - Rheims, Sylvain

AU - Minotti, Lorella

AU - Grisotto, Laura

AU - Chabardès, Stéphan

AU - Guenot, Marc

AU - Isnard, Jean

AU - Pellacani, Simona

AU - Hermier, Marc

AU - Ryvlin, Philippe

AU - Kahane, Philippe

N1 - Publisher Copyright: © 2022 International League Against Epilepsy.

PY - 2022

Y1 - 2022

N2 - Objective: Temporal plus epilepsy (TPE) represents a rare type of epilepsy characterized by a complex epileptogenic zone including the temporal lobe and the close neighboring structures. We investigated whether the complete resection of temporal plus epileptogenic zone as defined through stereoelectroencephalography (SEEG) might improve seizure outcome in 38 patients with TPE. Methods: Inclusion criteria were as follows: epilepsy surgery performed between January 1990 and December 2001, SEEG defining a temporal plus epileptogenic zone, unilobar temporal operations (“temporal lobe epilepsy [TLE] surgery”) or multilobar interventions including the temporal lobe (“TPE surgery”), magnetic resonance imaging either normal or showing signs of hippocampal sclerosis, and postoperative follow-up of at least 12 months. For each assessment of postoperative seizure outcome, at 1, 2, 5, and 10 years, we carried out descriptive analysis and classical tests of hypothesis, namely, Pearson χ2 test or Fisher exact test of independence on tables of frequency for each categorical variable of interest and Student t-test for each continuous variable of interest, when appropriate. Results: Twenty-one patients underwent TPE surgery and 17 underwent TLE surgery with a follow-up of 12.4 ± 8.16 years. In the multivariate models, there was a significant effect of the time from surgery on Engel Class IA versus IB–IV outcome, with a steadily worsening trend from 5-year follow-up onward. TPE surgery was associated with better results than TLE surgery. Significance: This study suggests that surgical outcome in patients with TPE can be improved by a tailored, multilobar resection and confirms that SEEG is mandatory when a TPE is suspected.

AB - Objective: Temporal plus epilepsy (TPE) represents a rare type of epilepsy characterized by a complex epileptogenic zone including the temporal lobe and the close neighboring structures. We investigated whether the complete resection of temporal plus epileptogenic zone as defined through stereoelectroencephalography (SEEG) might improve seizure outcome in 38 patients with TPE. Methods: Inclusion criteria were as follows: epilepsy surgery performed between January 1990 and December 2001, SEEG defining a temporal plus epileptogenic zone, unilobar temporal operations (“temporal lobe epilepsy [TLE] surgery”) or multilobar interventions including the temporal lobe (“TPE surgery”), magnetic resonance imaging either normal or showing signs of hippocampal sclerosis, and postoperative follow-up of at least 12 months. For each assessment of postoperative seizure outcome, at 1, 2, 5, and 10 years, we carried out descriptive analysis and classical tests of hypothesis, namely, Pearson χ2 test or Fisher exact test of independence on tables of frequency for each categorical variable of interest and Student t-test for each continuous variable of interest, when appropriate. Results: Twenty-one patients underwent TPE surgery and 17 underwent TLE surgery with a follow-up of 12.4 ± 8.16 years. In the multivariate models, there was a significant effect of the time from surgery on Engel Class IA versus IB–IV outcome, with a steadily worsening trend from 5-year follow-up onward. TPE surgery was associated with better results than TLE surgery. Significance: This study suggests that surgical outcome in patients with TPE can be improved by a tailored, multilobar resection and confirms that SEEG is mandatory when a TPE is suspected.

KW - epilepsy surgery

KW - long-term

KW - SEEG

KW - seizure outcome

KW - temporal plus

U2 - 10.1111/epi.17185

DO - 10.1111/epi.17185

M3 - Journal article

C2 - 35165888

AN - SCOPUS:85124596310

VL - 63

SP - 769

EP - 776

JO - Epilepsia

JF - Epilepsia

SN - 0013-9580

IS - 4

ER -