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Anatomic variations of the non-recurrent inferior laryngeal nerve
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DESCRIPTION
The non-recurrent inferior laryngeal nerve (NIRLN) is a rare anomaly (0.5–0.6% on the right side, extremely rare on the left side (0.004%)), which increases the risk of damage to the nerve during surgery. The right NRILN is associated with a right subclavian artery arising directly from the aortic arch. The left NRILN is associated with situs inversus.1–3
The origin of the NRILN is cervical. Three types can be …