TY - JOUR A1 - , T1 - An unusual case of three branches arising from the aortic arch: bicarotid trunk, left subclavian artery and aberrant right subclavian artery JO - Eur. J. Anat. SN - 1136-4890 Y1 - 2018 VL - 22 SP - 429 EP - 432 UR - http://www.eurjanat.com/web/paper.php?id=180175kk KW - Aberrant right subclavian artery Retro-esophageal right subclavian artery Bicarotid trunk Aneurysm Aortic arch Anatomical variation N2 - The presence of an aberrant right subclavian artery originating as the last branch of the aortic arch is a rare variation. A single case of this aberrant vessel, together with a bicarotid trunk, was observed in an 80-year-old female during dissection. A small, atherosclerotic saccular aneurysm was present at the origin of the aberrant vessel. The aberrant right subclavian artery coursed posterior to the esophagus and trachea to reach the right upper limb. Surgeons operating on structures in the mediastinum, including the esophagus, should be aware of the existence of this variant vessel to avoid accidental injury. ER -