Abstract
The management of high-grade glioma (HGG) has been affected by recent landmark trials and is now more proactive. More aggressive treatment leads to hospitalization due to side effects, however. Space-occupying tumor bed cysts have been described, but not systematically assessed. We sought to analyze this complication in a contemporary HGG cohort. We performed a retrospective review of patients with HGG treated between 2007 and 2013, identified patients with space-occupying tumor bed cysts, and reviewed their hospital notes for relevant variables. Statistical analyses were performed, and odds ratios (ORs) with 95% confidence intervals (CIs) were calculated. Tumor bed cysts were found in 12 of 282 patients (4%). The main symptoms were increased intracranial pressure (n = 11), new focal deficits (n = 6), and pseudomeningocele (n = 3), presenting at a median of 19 days since the last resection. Cysts were treated with cystoperitoneal (n = 7) and ventriculoperitoneal (n = 5) shunts, resulting in clinical benefit in 75% of those treated. Intraoperative opening of ventricles is a risk factor, with an OR of 39.339. We propose a classification system comprising 3 cyst types: isolated cyst, cyst with local cerebrospinal fluid (CSF) distu...Continue Reading
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