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Related Experiment Videos

Phrenic involvement in Charcot-Marie-Tooth disease. A pathologic documentation.

D Gilchrist1, C K Chan, J H Deck

  • 1Department of Medicine, Wellesley Hospitals, Toronto, Ontario, Canada.

Chest
|November 1, 1989
PubMed
Summary

Charcot-Marie-Tooth disease (CMT) can affect the diaphragm, leading to respiratory failure. Autopsy revealed similar nerve damage in the phrenic nerve as in other peripheral nerves of CMT patients.

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Area of Science:

  • Neurology
  • Peripheral Neuropathy
  • Respiratory Medicine

Background:

  • Charcot-Marie-Tooth disease (CMT) is a progressive hereditary neurological disorder affecting peripheral nerves.
  • Diaphragmatic weakness is a known, albeit less common, complication that can lead to respiratory compromise.
  • Understanding the specific nerve involvement in CMT is crucial for managing disease progression and complications.

Observation:

  • A 69-year-old female patient with a 30-year history of Charcot-Marie-Tooth disease (CMT) presented with respiratory failure.
  • The patient's death was attributed to severe diaphragmatic weakness.
  • Autopsy examination was performed to investigate the underlying neuropathological causes.

Findings:

  • Neuropathological examination revealed identical changes in the phrenic nerve (innervating the diaphragm) and other affected somatic peripheral nerves.

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  • These findings indicate that the phrenic nerve is susceptible to the neuropathic process in Charcot-Marie-Tooth disease.
  • The observed nerve degeneration directly correlated with the observed diaphragmatic weakness and subsequent respiratory failure.

    • Implications:

    • The phrenic nerve should be considered a potential site of involvement in Charcot-Marie-Tooth disease.
    • Early recognition and monitoring of diaphragmatic function may be warranted in CMT patients.
    • This finding may inform future diagnostic and therapeutic strategies for managing respiratory complications in CMT.