A case of right non-recurrent laryngeal nerve recognized during thyroid operation is reported.
An abnormal right subclavian artery was detected by esophagography and intravenous digital subtraction angiography of the aorta.
In a case in which the recurrent laryngeal nerve cannot be found, the possibility of nonrecurrent laryngeal nerve should be considered, and the nerve around the cricoid cartilage should be examined retrogradely.
