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Related Experiment Videos

[Intestinal myopathy in Steinert's disease].

J M Casasa1, R M Isnard, I Ojanguren

  • 1Hospital Universitario Germans Trias i Pujol, Carretera del Canyet, s/n. 08916 Badalona, Barcelona.

Cirugia Pediatrica : Organo Oficial De La Sociedad Espanola De Cirugia Pediatrica
|October 21, 2003
PubMed
Summary

Myotonic dystrophy (Steinert's disease), a genetic disorder affecting muscles, can cause severe constipation in children. This case highlights smooth muscle involvement in early-onset myotonic dystrophy, contributing to intestinal pseudo-obstruction.

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Area of Science:

  • Pediatric Gastroenterology
  • Neuromuscular Disorders
  • Gastrointestinal Motility

Background:

  • Myotonic dystrophy (Steinert's disease) is a congenital, autosomal dominant disorder primarily affecting striated muscle.
  • While systemic effects are known, intestinal smooth muscle involvement is less common, particularly in early childhood.

Observation:

  • A 4-year-old girl diagnosed with myotonic dystrophy at birth presented with severe constipation.
  • Ano-rectal manometry revealed paradoxical external sphincter activity, and rectal biopsy showed myopathy of the muscularis propria with intact innervation.
  • Motility disorder was localized to the distal left colon.

Findings:

  • Surgical intervention with colostomy was successful, followed by successful colon reanastomosis.
  • Partial external sphincter incontinence persisted, attributed to Steinert's disease.

Related Experiment Videos

  • The case demonstrates a pathological association of striated and smooth muscle myopathy at a very early age.

    • Implications:

    • This case contributes to understanding intestinal pseudo-obstruction in early-onset myotonic dystrophy.
    • Highlights the importance of considering smooth muscle involvement in pediatric neuromuscular disorders.
    • Suggests potential for novel therapeutic strategies targeting smooth muscle dysfunction in myotonic dystrophy.