OBJECTIVE: The best results in glioblastoma (GBM) are obtained through aggressive treatment comprising maximally radical but safe resection followed by chemoradiotherapy. However, certain patients will undergo only stereotactic biopsy. This paper aims to evaluate life expectancy in GBM patients who underwent only stereotactic biopsy, including the effect of subsequent oncological treatment. PATIENTS AND METHODS: Patients with confirmed GBM histology who had undergone stereotactic biopsy between June 2006 and December 2016 were retrospectively selected. Each patient had received a CT scan, followed by an MRI scan with a contrast agent. None of the patients were amenable to microsurgical resection. RESULTS: Of the 60 patients, 41 (69%) received no subsequent oncological treatment, while 14 (23%) underwent isolated radiotherapy. Mean survival time of all patients was 2.8 months. Those who received no additional treatment had an average survival time of 2.3 months; patients who received any type of oncological treatment was 3.7 months. Of these, those receiving radiotherapy alone had a mean survival of 3.1 months. Patients who received oncological treatment with the Stupp protocol had a survival time of 6.6 months. CONCLUSION: Diagnostic and surgical advances related to GBM treatment mean that radical resections can be performed even in eloquent brain areas. However, patients not indicated for resection will experience a major reduction in life expectancy. Patients who underwent stereotactic biopsy and received some form of oncological treatment experienced slightly increased overall survival relative to patients with a natural disease course. Patients with favorable clinical factors reacted better to treatment.

Department of Health Care Sciences Faculty of Humanities Tomas Bata University Zlin Czech Republic

Department of Neurosurgery University Hospital Olomouc and Faculty of Medicine and Dentistry Palacky University Olomouc Olomouc Czech Republic

Department of Oncology University Hospital Olomouc and Faculty of Medicine and Dentistry Palacky University Olomouc Olomouc Czech Republic

Department of Pathology and Laboratory of Molecular Pathology University Hospital Olomouc and Faculty of Medicine and Dentistry Palacky University Olomouc Olomouc Czech Republic

Institute of Molecular and Translational Medicine Faculty of Medicine and Dentistry Palacky University Olomouc Olomouc Czech Republic

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