Matthias Schneider1, Anna-Laura Potthoff2, Vera C Keil3, Ági Güresir2, Johannes Weller4, Valeri Borger2, Motaz Hamed2, Andreas Waha5, Hartmut Vatter2, Erdem Güresir2, Ulrich Herrlinger4, Patrick Schuss2. 1. Department of Neurosurgery, Rheinische Friedrich-Wilhelms-University, Sigmund-Freud-Straße 25, 53127, Bonn, Germany. matthias.schneider@ukbonn.de. 2. Department of Neurosurgery, Rheinische Friedrich-Wilhelms-University, Sigmund-Freud-Straße 25, 53127, Bonn, Germany. 3. Department of Radiology, Rheinische Friedrich-Wilhelms-University, Bonn, Germany. 4. Division of Clinical Neurooncology, Department of Neurology, Rheinische Friedrich-Wilhelms-University, Bonn, Germany. 5. Department of Neuropathology, Rheinische Friedrich-Wilhelms-University, Bonn, Germany.
Abstract
OBJECTIVE: Supra-total glioblastoma resection has gained growing attention with regard to superior long-term disease control. However, aggressive onco-surgical approaches-geared beyond conventional gross total resections (GTR)-are limited by the impairment of adjacent eloquent areas at risk that may entail severe postoperative functional morbidity. Against this backdrop we analyzed our institutional database with regard to potential survival benefits of anterior temporal lobectomy as a paradigm for supra-total resection in patients with precisely temporal-located, non-eloquent glioblastoma. METHODS: Between 2012 and 2017, 38 patients with isolated temporal glioblastoma underwent GTR or temporal lobectomy at the authors' institution. Both groups of differing resection modalities were compared with regard to postoperative Karnofsky performance score (KPS), progression-free survival (PFS), and overall survival (OS). RESULTS: Patients with temporal lobectomy exhibited significantly superior median KPS at the 12 months follow-up compared to the GTR group (median KPS of 80 vs. 60, p = 0.04). Temporal lobectomy was associated with significantly prolonged PFS (p = 0.005) and OS (p = 0.002) coming up to 15 months (95% CI 9.7-22.1) and 23 months (95% CI 14.8-34.5) compared to 7 months (95% CI 3.3-8.3) and 11 months (95% CI 9.2-17.9) for the GTR group. Multivariate analysis revealed temporal lobectomy as the only predictor for both superior PFS (p = 0.037, OR 7.3, 95% CI 1.1-47.4) and OS (p = 0.04, OR 7.8, 95% CI 1.1-55.2). CONCLUSIONS: These results strongly suggest temporal lobectomy as an aggressive supra-total resection policy to constitute the surgical modality of choice for isolated temporal-located glioblastoma.
OBJECTIVE: Supra-total glioblastoma resection has gained growing attention with regard to superior long-term disease control. However, aggressive onco-surgical approaches-geared beyond conventional gross total resections (GTR)-are limited by the impairment of adjacent eloquent areas at risk that may entail severe postoperative functional morbidity. Against this backdrop we analyzed our institutional database with regard to potential survival benefits of anterior temporal lobectomy as a paradigm for supra-total resection in patients with precisely temporal-located, non-eloquent glioblastoma. METHODS: Between 2012 and 2017, 38 patients with isolated temporal glioblastoma underwent GTR or temporal lobectomy at the authors' institution. Both groups of differing resection modalities were compared with regard to postoperative Karnofsky performance score (KPS), progression-free survival (PFS), and overall survival (OS). RESULTS:Patients with temporal lobectomy exhibited significantly superior median KPS at the 12 months follow-up compared to the GTR group (median KPS of 80 vs. 60, p = 0.04). Temporal lobectomy was associated with significantly prolonged PFS (p = 0.005) and OS (p = 0.002) coming up to 15 months (95% CI 9.7-22.1) and 23 months (95% CI 14.8-34.5) compared to 7 months (95% CI 3.3-8.3) and 11 months (95% CI 9.2-17.9) for the GTR group. Multivariate analysis revealed temporal lobectomy as the only predictor for both superior PFS (p = 0.037, OR 7.3, 95% CI 1.1-47.4) and OS (p = 0.04, OR 7.8, 95% CI 1.1-55.2). CONCLUSIONS: These results strongly suggest temporal lobectomy as an aggressive supra-total resection policy to constitute the surgical modality of choice for isolated temporal-located glioblastoma.
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