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Left Nonrecurrent Laryngeal Nerve: A Very Unusual Finding during Thyroid Surgery
Nicolas Galat Ahumada1, Flavio Carneiro Hojaij2, Caroline Cunico3
1Department of Surgery, Complexo Hospital de Clínicas, Universidade Federal do Paraná, Curitiba, PR, Brazil.
Case Reports in Surgery
|March 28, 2022
Summary
A rare non-recurrent left inferior laryngeal nerve was identified during thyroid surgery. This anatomical variation, associated with vascular anomalies, requires careful identification to prevent nerve injury.
Area of Science:
- Anatomy
- Vascular Surgery
- Endocrinology
Background:
- Identifying the inferior laryngeal nerve is crucial in thyroid surgery.
- The typical recurrent laryngeal nerve path is established during embryonic development.
- Variations in the nerve's path, though rare, can occur.
Observation:
- A 46-year-old female underwent thyroidectomy for a multinodular goiter.
- A non-recurrent left inferior laryngeal nerve was encountered.
- CT scan revealed dextroposition of heart base vessels and an aberrant left subclavian artery.
Findings:
- The patient presented with a rare left non-recurrent inferior laryngeal nerve.
- This anomaly was associated with dextroposition of heart base vessels and an aberrant left subclavian artery.
- Only six cases of left non-recurrent inferior laryngeal nerve have been reported.
Implications:
- Association of right-sided aortic arch, aberrant left subclavian artery, or situs inversus with non-recurrent left inferior laryngeal nerve.
- Accurate identification of these vascular anomalies is essential for surgical planning.
- Proper identification aids in the successful salvage of the non-recurrent inferior laryngeal nerve.
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