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Postoperative development of children after hemispherotomy
Taketoshi Maehara1, Hiroyuki Shimizu, Kensuke Kawai
1Department of Neurosurgery, Tokyo Metropolitan Neurological Hospital, 2-6-1 Musashidai, Fuchu-shi, 183-0042 Tokyo, Japan. maehara.nsrg@tmd.ac.jp
Brain & Development
|April 6, 2002
Summary
Hemispherectomy surgery can significantly reduce seizures in children with cortical dysgenesis. Early intervention and high preoperative intellectual function correlate with better long-term developmental outcomes.
Area of Science:
- Pediatric Neurology
- Developmental Neuroscience
- Neurosurgery
Background:
- Cortical dysgenesis is a congenital brain malformation associated with intractable epilepsy.
- Functional hemispherectomy (hemispherotomy) is a surgical option for severe cases.
- Understanding postoperative neurodevelopmental outcomes is crucial for patient management.
Purpose of the Study:
- To evaluate the neurodevelopmental outcomes in children with cortical dysgenesis after hemispherotomy.
- To identify factors associated with improved postoperative development.
Main Methods:
- Retrospective study of 14 children with cortical dysgenesis undergoing hemispherotomy before age 6.
- Assessment of seizure frequency and developmental quotient (DQ) preoperatively and postoperatively (24-72 months follow-up).
Main Results:
- 43% of children became seizure-free, and 43% achieved >90% seizure reduction.
- Total DQ improved from 25.5 to 31.9; intellectual DQ improved from 26.0 to 33.7.
- Motor DQ showed a slight decline from 27.4 to 22.9.
- Preoperative intellectual DQ >50 correlated with near-normal postoperative intellectual DQ.
- Children with preoperative DQ 10-50, seizure cessation, and early surgery (first 3 years) showed marked developmental progress.
Conclusions:
- High preoperative intellectual DQ and seizure cessation are associated with better postoperative intellectual development.
- Early surgical intervention may enhance developmental progress in select pediatric epilepsy cases.
- Long-term follow-up and larger cohorts are needed for definitive conclusions.