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Revista médica del Hospital General de México

On-line version ISSN 2524-177XPrint version ISSN 0185-1063


DAVILA-RUIZ, Ediel O.; GARCIA-MANZANO, Roberto A.; MARTINEZ-SANTIAGO, Nallely Y.  and  BRACAMONTES-ROSAS, Daniel A.. Intraoperative finding non-recurrent inferior laryngeal nerve, critical step of thyroid surgery, literature review, and case report. Rev. med. Hosp. Gen. Méx. [online]. 2020, vol.83, n.3, pp.131-134.  Epub Sep 06, 2021. ISSN 2524-177X.


Non-recurrent laryngeal nerve is a relatively rare finding occurring in 0.3%-0.5% of people. Other authors estimate that prevalence was 0.7%.


We present a case of a female 48 years old who underwent hemithyroidectomy due to a thyroid nodule, identifying the presence of a non-recurring vertical variant laryngeal nerve.


The importance lies in the knowledge of the anatomical variations of the inferior laryngeal nerve (ILN). Since unilateral laryngeal paralysis is a complication associated with thyroidectomy, which is globally between 5 and 8% (transient) and 1 and 3% (permanent). The ILN should always be identified and meticulous surgical technique is necessary.


ILN dissection should be guided by neurostimulation, if not counted, the recommendation that always should be followed is not to dissect structures until the laryngeal nerve is correctly identified.

Keywords : Non-recurrent laryngeal nerve; Thyroidectomy; Injury recurrent laryngeal nerve; Anatomical variations inferior laryngeal nerve.

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