A rare case of thoracic renal artery.

Identifying of variations of renal vascular anatomy is important for radical surgery, endovascular intervention, and renal transplantation. While there are common normal variations of renal vascular anatomy, such as accessory renal arteries, a main renal artery that originates from the thoracic aorta (thoracic renal artery) is remarkably rare. The majority of reported cases of thoracic renal artery were right side, except two cases reported on 1980 and 2016. The author reports a rare case of left renal artery originating from the thoracic aorta.