Botulinum toxin injection for abductor spasmodic dysphonia under cervical ultrasonography guidance

Auris Nasus Larynx. 2024 Apr;51(2):361-364. doi: 10.1016/j.anl.2023.09.008. Epub 2023 Oct 12.

Abstract

Ultrasound (US) imaging effectively provides real-time anatomical information for clinical examinations. In otolaryngology, US imaging can visualize laryngeal muscles as well as cervical muscles. Here we present the case where US imaging was used while injecting botulinum toxin (BT) for the treatment of abductor spasmodic dysphonia, which provided definite results. We could visualize not only the injection pathway but also the infiltration of the BT solution into the posterior cricoarytenoid muscles. Therefore, our laryngeal US imaging is useful for both improving the success rate and avoiding injection complications of BT.

Keywords: Abductor spasmodic dysphonia; Botulinum toxin; Ultrasound; Visualization.

Publication types

  • Case Reports

MeSH terms

  • Botulinum Toxins* / therapeutic use
  • Botulinum Toxins, Type A* / therapeutic use
  • Dysphonia* / diagnostic imaging
  • Dysphonia* / drug therapy
  • Humans
  • Laryngeal Muscles / diagnostic imaging
  • Neck
  • Treatment Outcome
  • Voice Disorders* / drug therapy

Substances

  • Botulinum Toxins
  • Botulinum Toxins, Type A