Journal
CHILDS NERVOUS SYSTEM
Volume 37, Issue 7, Pages 2153-2161Publisher
SPRINGER
DOI: 10.1007/s00381-021-05176-x
Keywords
Hemispherotomy; Hemispherectomy; Functional; Epilepsy surgery; Pediatric
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This study reviewed the literature on functional disconnection surgery in treating pediatric epilepsy and found that both vertical and lateral hemispherotomy approaches can achieve similar rates of seizure freedom and functional outcomes in appropriately selected patients. The lateral and interhemispheric approaches, with shorter operative times and less blood loss, may have advantages.
Purpose Several variations of functional disconnection surgery have been described for the treatment of lateralized, hemispheric, drug-resistant epilepsy in children. The purpose of this study is to investigate the existing literature regarding patient selection, approach, and outcomes after hemispherotomy. Methods A systematic review of the English literature through February 2019 was performed in accordance with the PRISMA statement. The articles were classified by level of evidence and summarized in an evidentiary table. Seizure outcomes, functional outcomes, surgical techniques, complications, and patient selection were critically analyzed. Results A total of 173 papers were reviewed, of which 37 met criteria of inclusion and exclusion. Thirteen studies were classified as level III evidence, the remaining reached level IV. Vertical and lateral hemispherotomy achieve similar rates of seizure freedom and functional outcomes, though parasagittal and interhemispheric approaches may have shorter operative times and less blood loss. Etiology, bilateral MRI abnormalities, and nonlateralizing EEG did not predict worse seizure or functional outcomes. Conclusions Both vertical and lateral hemispherotomy approaches result in durable, reproducible benefits to epilepsy severity and functional status in appropriately selected pediatric patients.
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