gms | German Medical Science

70. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)
Joint Meeting mit der Skandinavischen Gesellschaft für Neurochirurgie

Deutsche Gesellschaft für Neurochirurgie (DGNC) e. V.

12.05. - 15.05.2019, Würzburg

Morphologic and radiomic features of glioblastoma patients presenting with seizures

Morphologische und radiologische Eigenschaften bei Glioblastom-Patienten mit Epilepsie

Meeting Abstract

  • presenting/speaker Melanie Barz - Klinikum rechts der Isar, Technische Universität München, Neurochirurgische Klinik und Poliklinik, München, Deutschland
  • Stefanie Bette - Technische Universität München, Klinikum rechts der Isar, Neuroradiologie, München, Deutschland
  • Maria Berndt - Technische Universität München, Klinikum rechts der Isar, Neuroradiologie, München, Deutschland
  • Claus Zimmer - Technische Universität München, Klinikum rechts der Isar, Neuroradiologie, München, Deutschland
  • Bernhard Meyer - Klinikum rechts der Isar, Technische Universität München, Neurochirurgische Klinik und Poliklinik, München, Deutschland
  • Yu-Mi Ryang - Klinikum rechts der Isar, Technische Universität München, Neurochirurgische Klinik und Poliklinik, München, Deutschland
  • Benedikt Wiestler - Technische Universität München, Klinikum rechts der Isar, Neuroradiologie, München, Deutschland
  • Jens Gempt - Klinikum rechts der Isar, Technische Universität München, Neurochirurgische Klinik und Poliklinik, München, Deutschland

Deutsche Gesellschaft für Neurochirurgie. 70. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Skandinavischen Gesellschaft für Neurochirurgie. Würzburg, 12.-15.05.2019. Düsseldorf: German Medical Science GMS Publishing House; 2019. DocP197

doi: 10.3205/19dgnc533, urn:nbn:de:0183-19dgnc5336

Veröffentlicht: 8. Mai 2019

© 2019 Barz et al.
Dieser Artikel ist ein Open-Access-Artikel und steht unter den Lizenzbedingungen der Creative Commons Attribution 4.0 License (Namensnennung). Lizenz-Angaben siehe http://creativecommons.org/licenses/by/4.0/.


Gliederung

Text

Objective: Brain tumor-related seizures are common in glioma patients. Many studies investigated risk factors for preoperative seizures as those are associated with improved survival. The role of preoperative tumor volume was discussed controversial in the literature. Aim of this study was to assess associations between preoperative seizures and morphologic (tumor volume) and radiomic features in glioblastoma (GB) patients.

Methods: 184 patients with surgery for a newly diagnosed glioblastoma (WHO IV) were retrospectively included in this study. Inclusion criteria comprised availability of preoperative MRI including FLAIR images, T1-weighted images after contrast agent (1mm isotropic) and diffusion tensor imaging (DTI). Medical charts were reviewed for preoperative seizures. Semiautomatic segmentation of preoperative MRI was performed using ITKsnap. Tumor volume was assessed by counting voxels. ADC- and FA values were assessed using first order features. T-tests with false-discovery rate adjustment were performed.

Results: 66/184 glioblastoma patients presented with seizures. Patients with seizures showed significantly lower preoperative contrast-enhancing tumor volume (adjusted P=0.025). Significant differences between patients were observed in first order features of the contrast-enhancing tumor part for ADC- and FA values. Patients with preoperative seizures presented with significantly lower values for ADC total energy (adj. P=0.025), FA total energy (adj. P=0.025), ADC energy (adj. P=0.025), FA energy (adj. P=0.025) and ADC range (adj. P=0.025).

Conclusion: Glioblastoma patients with seizures present with significantly smaller tumors. These tumors show microstructural differences in the contrast-enhancing tumor part detected by DTI. These results suggest that these tumors have a different structure that might be accountable for the better prognosis of these patients.