Objective: The objective of this study was to retrospectively review the postoperative seizure outcome in patients with short duration of epilepsy associated with cavernous malformations and analyze the effect of surgical methods on seizure outcome in such population.
Methods: 36 patients with short duration of epilepsy (shorter than 12 months) associated with cavernous malformations in temporal or frontal lobe underwent microsurgical resection. The patients were retrospectively divided into two groups: Group A (21 patients) with complete removal of hemosiderin rim and Group B (15 patients) with partial removal of hemosiderin rim. Clinical follow-up was achieved with telephone correspondence or outpatient assessment. The seizure outcome was based on Engel's classification.
Results: After a mean follow-up period of 18 months, 77.8% of the patients (28/36) were classified into Engel class I, including 19 patients (90.5%) in the complete removal of hemosiderin rim group (Group A) and 9 patients (60%) in the partial removal of hemosiderin rim group (Group B). Seizure outcome was significantly better in Group A. There was no mortality and all the postoperative neurological deficits were recovered at the time of follow-up.
Conclusion: The analysis of the seizure outcome demonstrate patients with short duration of epilepsy associated with cavernous malformations could benefit greatly from complete resection of hemosiderin rim and cavernous malformations.
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