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Split cord malformation: three unusual cases of composite split cord malformation
1Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi. svaishya@hotmail.com
Summary
Composite split cord malformations (SCMs) involve multiple noncontiguous SCMs, arising from accessory neurenteric canals. These rare cases support the unified theory of SCM development.
Area of Science:
- Developmental biology
- Pediatric neurosurgery
Background:
- Split cord malformations (SCMs) originate from a single fault: an accessory neurenteric canal.
- This canal splits the notochord and neural plate during embryonic development.
- Multiple canals can result in noncontiguous SCMs, termed composite SCMs.
Observation:
- Presents three unique cases of composite split cord malformation.
- Case 1: A boy with type II SCMs at two distinct spinal levels.
- Case 2: A girl with type I SCM at L2-3 and type II SCM at L5.
- Case 3: A combination of type I and type II SCMs at L1-3.
Findings:
- Details the presentation and classification of three composite SCM cases.
- Highlights the rarity of composite SCM, with few reported instances.
- Demonstrates varied combinations of SCM types and levels in composite cases.
Implications:
- These cases reinforce the unified theory of split cord malformation etiology.
- Contributes to understanding the spectrum and developmental basis of complex SCMs.
- Informs clinical diagnosis and management strategies for rare SCM presentations.