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Related Experiment Videos

[The immobile vocal cord]

A C Hulshoff1, F G Dikkers

  • 1Rijksuniversiteit, Faculteit der Medische Wetenschappen, afd. Anatomie en Embryologie, Groningen.

Nederlands Tijdschrift Voor Geneeskunde
|December 18, 1998
PubMed
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Peripheral neurological disorders can cause vocal fold paralysis, leading to dysphonia. Prompt medical evaluation is crucial for diagnosis and treatment when hoarseness persists beyond three weeks.

Area of Science:

  • Otolaryngology
  • Neurology

Background:

  • Dysphonia, or hoarseness, often stems from functional laryngeal issues.
  • However, it can also indicate hemilaryngeal paresis or paralysis, suggesting underlying neurological causes.

Observation:

  • This study examined four male patients (aged 18-57) presenting with dysphonia due to hemilaryngeal paralysis.
  • All cases involved peripheral neurological lesions: two from tumors, one iatrogenic (vagus nerve severance during cancer surgery), and one likely viral.

Findings:

  • Peripheral lesions affecting the vagus nerve or its branches were identified as the cause of hemilaryngeal paralysis in these patients.
  • Potential causes of peripheral lesions include tumors, iatrogenic injury, viral infections, toxicology, trauma, or idiopathic factors.

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Implications:

  • Persistent dysphonia warrants an otorhinolaryngologist examination, including vocal fold assessment.
  • Hemilaryngeal paresis is a symptom, necessitating further neurological investigation to determine the underlying cause and guide treatment.