Seizure outcomes after anterior callosotomy in patients with posterior-dominant and with anterior-dominant epileptiform discharges

Shang Yeong Kwan, Tai-Tong Wong, Kai Ping Chang, Tsui Fen Yang, Ying Chiao Lee, Wan Yuo Guo, Ming Shung Su

Research output: Contribution to journalArticle

5 Citations (Scopus)


Objects: We wished to find whether there was any difference in the postoperative seizure outcome between patients with bisynchronous anterior-dominant and those with posterior-dominant EDs after anterior callosotomy. Methods: Seizure outcomes after anterior callosotomy in 7 patients with bisynchronous posterior-dominant epileptiform discharges and in 54 patients with anterior-dominant seizures were compared. All 61 cases had been followed up for more than 2 years after operation. One patient (14.3%) had become seizure free. Two patients (28.6%) had more than 50% reduction in seizure frequency, but 4 patients (57.2%) showed no improvement at all. The percentage of cases with significant improvement (more than 50% reduction of seizure frequency) was 43% (3 in 7), which is lower than in the patients with bisynchronous anterior-dominant EDs (64.8%). Conclusions: Our preliminary results suggest that anterior partial callosotomy could still be helpful in cases with bisynchronous posterior-dominant epileptiform discharges but the prognosis may be less optimistic than for those with anteriorly located discharges.

Original languageEnglish
Pages (from-to)71-75
Number of pages5
JournalChild's Nervous System
Issue number1-2
Publication statusPublished - Jan 1 2001
Externally publishedYes



  • Callosotomy
  • Corpus callosum
  • Epilepsy
  • Lennox-Gastaut syndrome

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Clinical Neurology

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