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[Hydromyelia associated with spinal lipoma]

K Wada1, K Morimoto, O Takemoto

  • 1Department of Neurosurgery, Osaka Medical Center and Research Institute for Maternal and Child Health, Japan.

No to Shinkei = Brain and Nerve
|December 29, 1998
PubMed
Summary
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Spinal lipoma in infants often co-occurs with hydromyelia, particularly the terminal ventricle type. Surgical untethering shows varied effects on hydromyelia morphology, with most cases experiencing reduction or attenuation post-operation.

Area of Science:

  • Pediatric Neurosurgery
  • Developmental Neurology
  • Spinal Cord Imaging

Context:

  • Spinal lipomas, often associated with lumbosacral skin abnormalities, are increasingly detected early via MRI.
  • Hydromyelia is a significant complication in infants with spinal lipoma, affecting over 69% of surgical cases studied.
  • A specific subset of congenital hydromyelia, the terminal ventricle type, is noted in 36% of spinal lipoma patients with hydromyelia.

Purpose:

  • To investigate the morphological changes of hydromyelia in infants following surgical untethering for spinal lipoma.
  • To characterize the prevalence and specific types of hydromyelia associated with spinal lipoma.
  • To analyze the impact of spinal cord untethering on the development and regression of hydromyelia.

Summary:

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  • The study analyzed 44 surgical cases of spinal lipoma, finding hydromyelia in 25 (69.4%), with 9 cases (36% of those with hydromyelia) exhibiting the terminal ventricle type.
  • Morphological changes in hydromyelia after untethering surgery were diverse: 9 cases showed reduction, 8 expanded then attenuated (total 68% with favorable changes), while 5 expanded and 3 remained unchanged over 20.6-26.9 months follow-up.
  • The findings suggest a complex relationship between spinal lipoma, congenital hydromyelia (specifically terminal ventricle type), and surgical intervention outcomes.

    • Impact:

    • Provides crucial insights into the natural history and post-surgical evolution of hydromyelia in the context of spinal lipoma.
    • Highlights the importance of early detection and surgical management for improving outcomes in affected infants.
    • Contributes to understanding the embryogenesis of spinal cord malformations and the efficacy of untethering procedures.