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Brainstem calcification in Möbius syndrome.

Joseph M Dooley1, Wendy A Stewart, James D Hayden

  • 1Department of Pediatrics, Division of Pediatric Neurology, Dalhousie University and IWK Health Centre, Halifax, Nova Scotia, Canada.

Pediatric Neurology
|January 24, 2004
PubMed
Summary

Möbius syndrome, a congenital condition causing facial palsy, may stem from prenatal brain ischemia. This study found brainstem calcification in affected children, supporting the prenatal ischemia hypothesis.

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Area of Science:

  • Neurology
  • Pediatrics
  • Medical Genetics

Background:

  • Möbius syndrome presents as congenital facial diplegia, often with limb or orofacial malformations.
  • The exact pathogenesis remains unclear, with prenatal ischemia being a leading hypothesis.

Purpose of the Study:

  • To investigate the underlying pathology of Möbius syndrome.
  • To evaluate the association between Möbius syndrome and prenatal brain ischemia.

Main Methods:

  • Retrospective review of seven children diagnosed with Möbius syndrome (1992-2001).
  • Clinical assessment of facial palsy and associated malformations.
  • Analysis of computed tomographic (CT) scans for brainstem abnormalities, particularly calcification.

Main Results:

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  • All seven patients exhibited incomplete bilateral facial palsy.
  • Six patients presented with associated limb and/or orofacial anomalies.
  • Five of six CT scans revealed brainstem calcification, predominantly in the floor of the fourth ventricle, present from early infancy.

Conclusions:

  • The presence and static nature of brainstem calcification support a prenatal onset.
  • Findings suggest that prenatal brain ischemia is a likely cause of Möbius syndrome's pathology.