• Zhengda Yu, Nan Zhang, HameedN U FarrukhNUFGlioma Surgery Division, Neurological Surgery Department of Huashan Hospital, Fudan University, Shanghai, China., Tianming Qiu, Dongxiao Zhuang, Junfeng Lu, and Jinsong Wu.
• Glioma Surgery Division, Neurological Surgery Department of Huashan Hospital, Fudan University, Shanghai, China.
• World Neurosurg. 2019 May 1; 125: e947-e957.

ObjectiveTo evaluate the risk factors of tumor-related epilepsy (TRE) and the relationship between TRE and functional/survival outcomes in patients with high-grade glioma (HGG).MethodsThe clinical data of 587 patients with HGG were retrospectively analyzed. A χ2 test and logistic multiple-regression analysis were used to analyze factors associated with TRE. Logistic and Cox regression were used to analyze factors that may influence functional and survival outcomes.ResultsGlioma location in temporal (odds ratio [OR], 0.439; P = 0.04) and parietal lobes (OR, 0.092; P = 0.02) were independent protective factors of preoperative epilepsy, compared with gliomas of frontal lobe. Preoperative epilepsy (OR, 9.290; P < 0.001) and dominant hemispheric location (OR, 2.616; P = 0.04) were independent risk factors of postoperative epilepsy. On univariate analysis, patients with preoperative epilepsy had longer progression-free survival (PFS) (P = 0.001) and overall survival (OS) (P < 0.001). Multivariate analysis further confirmed that preoperative epilepsy was an independent protective factor of OS (hazard ratio, 0.587; P = 0.008).ConclusionsIn patients with HGG, preoperative epilepsy is significantly associated with tumor involvement of the frontal lobe, whereas postoperative epilepsy is associated with preoperative epilepsy and dominant hemispheric location. Also, patients with HGG with preoperative epilepsy have better PFS and OS.Copyright © 2019 Elsevier Inc. All rights reserved.

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