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Nemaline myopathy: two autopsy reports

M Bergmann1, M Kamarampaka, K Kuchelmeister

  • 1Institut für Klinische Neuropathologie, Zentralkrankenhaus Bremen-Ost, Germany.

Child'S Nervous System : Chns : Official Journal of the International Society for Pediatric Neurosurgery
|October 1, 1995
PubMed
Summary
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Nemaline myopathy can be rapidly fatal in infants. Autopsy revealed changes in muscle fiber atrophy and rod accumulation, particularly in diaphragmatic muscles.

Area of Science:

  • Neurology
  • Pathology
  • Genetics

Background:

  • Nemaline myopathy is a congenital myopathy typically non-progressive.
  • Rarely, it can lead to early infant death.

Observation:

  • Two cases of rapidly fatal nemaline myopathy are presented.
  • Autopsy findings revealed dynamic changes in muscle pathology post-mortem.
  • Rod accumulation varied significantly between patients and muscle groups.

Findings:

  • Autopsy showed resolution of type 1 fiber atrophy and maturational arrest.
  • Nemaline rods shifted centrally in one patient and increased in number in the other.
  • Diaphragmatic muscles consistently showed abundant rods.
  • Cardiac muscle had minimal rod presence, except in a patient with heart insufficiency.

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Implications:

  • These findings challenge the typical understanding of nemaline myopathy progression.
  • Autopsy provides unique insights into the dynamic nature of nemaline rod formation and distribution.
  • Further research is needed to understand the mechanisms behind these observed changes.