The Occurrence of 4 Variations: Retroesophageal Right Subclavian Artery, Aortic Origin of Left Vertebral Artery, Right Non-Recurrent Laryngeal Nerve and Right-Sided Thoracic Duct in Thai Cadaver: A Case Report
Thanissara Chomkerd MSc*, Nongnuch Kanharat PhD*, Ratana Leksomboon PhD*
Affiliation : * College of Medicine and Public Health, Ubon Ratchathani University, Ubon Ratchathani, Thailand
Background : An understanding of the variability of branches of aortic arch and associated anomaly impact in radiological
examination and surgery for diagnosis.
Objective : To present the retro esophageal right subclavian artery and theaortic origin of left vertebral artery associated with
right-sided thoracic duct and right non-recurrent laryngeal nerve.
Material and Method: The case study was carefully dissected to investigate the great vessels of the aortic arch and other
related variation structures.
Results : We found four anatomical variations in a 75-year-old Northeast Thai male cadaver. The four variations are
composed of anomalies of the aortic origin of left vertebral artery, retro esophageal right subclavian artery, the right-sided
thoracic duct and the right non-recurrent laryngeal nerve.
Conclusion : The finding of four variations in this case benefits for awareness during surgery in order to decrease the risk
of iatrogenic injury.
Keywords : Aortic origin of left vertebral artery, Retroesophageal right subclavian artery, Right-sided thoracic duct, Right non- recurrent laryngeal nerve
