PMC7194429_01
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
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F1
A negative Y sign was also noted [Figure 1b].
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
JMU-28-48-g002.jpg
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F2
During the operation, the right NRLN was identified crossing the tracheoesophageal groove toward the larynx [Figure 2].