case_images: PMC7194429_01
case_images: Ultrasonography of the right subclavian artery. (a) Longitudinal view of the normal right subclavian artery. The subclavian artery, CCA, and BCT form a "Y sign". (b) Longitudinal view of the right aberrant subclavian artery. The subclavian artery and CCA arise from the aortic arch separately. There is no connection between the subclavian artery and CCA (negative Y sign). CCA: Common carotid artery, BCT: Brachiocephalic trunk, SCA: Subclavian artery
case_images: JMU-28-48-g001.jpg
case_images: PMC7194429_01_JMU-28-48-g001.jpg
case_images: F1
case_images: A negative Y sign was also noted [Figure 1b].
case_images: Right nonrecurrent laryngeal nerve during surgery. (a) Right nonrecurrent laryngeal nerve crossing the tracheoesophageal groove toward the larynx. (b) Right nonrecurrent laryngeal nerve preserved after the right thyroid lobectomy
case_images: JMU-28-48-g002.jpg
case_images: PMC7194429_01_JMU-28-48-g002.jpg
case_images: F2
case_images: During the operation, the right NRLN was identified crossing the tracheoesophageal groove toward the larynx [Figure 2].