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Increasing Seizure Activity During Radiation Treatment for High-grade Gliomas - Final Results of a Prospective
Dirk Rades1, Jaspar Witteler2, Peter Trillenberg3
1Department of Radiation Oncology, University of Lübeck, Lübeck, Germany; dirk.rades@uksh.de.
Background/Aim:
Little is known regarding seizures during radiotherapy for brain tumors. This prospective study investigated seizure activity in patients irradiated for high-grade gliomas.
Patients And Methods:
Using a seizure diary, progression of seizure activity was evaluated in 22 patients receiving chemoradiation for grade III (n=1) or IV (n=21) gliomas. Progression was defined as increased frequency of any and/or generalized seizures (>50%) or increased anti-epileptic medication (≥25%). Patients' satisfaction with the diary was assessed using a questionnaire (six scales of 1-7 points). Uni- and multivariable analyses were performed including baseline seizure activity, age, sex, resection, tumor site, performance score, and history of epilepsy/seizures.
Results:
Ten patients (45%) experienced progression of seizure activity during their radiotherapy course, mainly due to increased seizure frequency (nine patients=41%). Mean values of patients' satisfaction scores ranged between 3.92 and 4.92 points.
Conclusion:
Radiotherapy of high-grade gliomas can increase seizure activity. Patients require close monitoring to initiate or adjust anti-epileptic medication.
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