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  • Title: Craniotomy for recurrent glioblastoma: Is it justified? A comparative cohort study with outcomes over 10 years.
    Author: Mukherjee S, Wood J, Liaquat I, Stapleton SR, Martin AJ.
    Journal: Clin Neurol Neurosurg; 2020 Jan; 188():105568. PubMed ID: 31739155.
    Abstract:
    OBJECTIVE: The role of repeat resection for recurrent glioblastoma multiforme (rGBM) is unclear. This large comparative cohort study assessed overall survival (OS), survival since recurrence (SSR), quality of life, and complications in reoperated versus non-reoperated patients for rGBM. PATIENTS AND METHODS: All patients with rGBM between 2005 and 2015, who were discussed by our institution's multi-disciplinary team, and who either did or did not undergo reoperation, were prospectively followed up with data collected and compared. Survival and prognostic factors were analysed using Kaplan-Meier and Cox regression methods. RESULTS: 312 patients (reoperated, n = 145; non-reoperated, n = 167) were analysed. Median SSR was 10.8 months and 6.9 months in the reoperated and non-reoperated groups respectively (Log-rank test: p = 0.02). Median OS was 24.1 months and 20.4 months in the reoperated and non-reoperated groups, respectively (Log-rank test: p = 0.04). Quality of life as measured by Short Form 36 scores were 59 versus 54 at baseline and 62 versus 51 at four-month follow-up for re-operated and non-reoperated groups, respectively (p < 0.05). Age < 60 years, Karnofsky Performance Status (KPS) ≥ 80, recurrence ≥ 9 months from initial diagnosis, methylguanine methyltransferase (MGMT) promoter methylation, and extent of resection (EOR) > 80 %, each were significant predictors of SSR and OS. Complication rates were 5.5 % and 6.2 % following repeat resection and primary resection, respectively (p > 0.05). CONCLUSION: This is the first large prospective comparative cohort study of rGBM and demonstrates that repeat resection confers a small but significant benefit in survival and quality of life over non-operative treatment. Best prognosis is associated with: younger age, KPS ≥ 80, late recurrence, MGMT promoter methylation and EOR > 80 %.
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