Abstracts

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BACKGROUNDIn glioma patients, tumor development and multimodality therapy are associated with changes in health-related quality of life (HRQoL). It is largely unknown how different types and locations of tumor- and treatment-related brain lesions, as well as their relationship to white matter tracts and functional brain networks, affect HRQoL.MATERIAL AND METHODSIn 121 patients with pretreated gliomas of WHO CNS grades 3 or 4, structural MRI, O-(2-[18F]fluoroethyl)-L-tyrosine (FET) PET, resting-state functional MRI (rs-fMRI) and self-reported HRQoL questionnaires (EORTC QLQ-C30/BN20) were obtained. [...]

BACKGROUNDGlioma patients frequently suffer from cognitive dysfunction potentially related to brain damage caused by tumor invasion or therapeutic intervention. We hypothesized that, as in other neurological disorders, the long-term outcome of cognitive functions in glioma patients critically depends on maintaining the structural connectivity of multiple interconnected networks.PATIENTS AND METHODSOne hundred and twenty-one glioma patients (median age, 52 years; median ECOG score, 1) with histomolecularly characterized CNS WHO grade 3 or 4 gliomas were investigated after a median time of 14 months (range, 1-214 months) following first-line therapy, including resection and chemoradiation with alkylating agents. [...]