Ma Zeliang, Han Jing, Li Haozhong, Guo Kaihua
Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
Department of Anatomy, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
Interact Cardiovasc Thorac Surg. 2018 Jan 1;26(1):165-166. doi: 10.1093/icvts/ivx256.
Here, we present a unique case with 5 branches of the aortic arch (AA), namely the right common carotid artery, left common carotid artery, left thyrocervical trunk, left subclavian artery and right subclavian artery (RSA), from right to left. We found that the left thyrocervical trunk originated directly from the AA rather than the left subclavian artery. In addition, the RSA arose dorsally as the last branch of the AA and passed posteriorly to the oesophagus to supply the right upper limb. In addition, the right vertebral artery originated from the right common carotid artery instead of the RSA. Despite numerous studies on AA variations, to our knowledge, this is the first case of the left thyrocervical trunk originating directly from the AA and the RSA arising dorsally as the last branch of a 5-branch AA. Our case provides useful information to anatomists, radiologists and neck and thoracic surgeons.
在此，我们呈现了一例独特的病例，主动脉弓（AA）有5个分支，从右至左依次为右颈总动脉、左颈总动脉、左甲状腺颈干、左锁骨下动脉和右锁骨下动脉（RSA）。我们发现左甲状腺颈干直接起源于主动脉弓而非左锁骨下动脉。此外，右锁骨下动脉作为主动脉弓的最后一个分支从背侧发出，向后经食管后方走行以供应右上肢。另外，右椎动脉起源于右颈总动脉而非右锁骨下动脉。尽管对主动脉弓变异已有众多研究，但据我们所知，这是首例左甲状腺颈干直接起源于主动脉弓且右锁骨下动脉作为五分支主动脉弓的最后一个分支从背侧发出的病例。我们的病例为解剖学家、放射科医生以及颈部和胸外科医生提供了有用的信息。
