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Updated: Aug 10, 2026
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Learning Modern Laryngeal Surgery in a Dissection Laboratory
Published on: March 18, 2020
Laryngocele: an anatomical variant
The Journal of Laryngology and Otology
|December 22, 1999
Summary
External laryngoceles may penetrate the thyrohyoid membrane superiorly, not just via the neurovascular bundle. Careful neck dissection is crucial to avoid damaging the neurovascular bundle during laryngocele surgery.
Area of Science:
- Otolaryngology
- Surgical Anatomy
Background:
- External laryngoceles are air-filled sacs extending from the larynx.
- Their typical penetration pathway through the thyrohyoid membrane is believed to be associated with the neurovascular bundle.
Observation:
- A case is presented where an external laryngocele sac penetrated the thyrohyoid membrane at a posterosuperior location.
- This site was distinct from the usual neurovascular bundle penetration point.
Findings:
- The common belief regarding the exclusive penetration site of external laryngoceles through the thyrohyoid membrane is challenged.
- Anatomical variations in laryngocele sac trajectory exist, with potential for superior or posterior extension.
Implications:
- Surgical approaches for external laryngoceles require meticulous dissection to account for varied penetration sites.
- Awareness of alternative anatomical pathways is essential for preventing iatrogenic injury to the recurrent laryngeal nerve and associated vasculature.
- This finding may influence preoperative imaging and surgical planning for laryngocele management.
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