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Updated: May 6, 2026

Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm
Published on: August 1, 2025
Circumaortic left renal vein associated with juxtarenal abdominal aortic aneurysm
Koji Hashizume1, Shinichiro Taniguchi, Tsuneo Ariyoshi
1Department of Cardiovascular Surgery, Nagasaki University Hospital, Nagasaki, Nagasaki, Japan.
Abstract:
The patient was an 82-year-old man who was found to have a juxtarenal abdominal aortic aneurysm accompanied by a circumaortic left renal vein (CLRV). During dissection of the proximal anastomosis site the CLRV was injured, but was successfully repaired. A graft implantation was performed below the renal arteries. The incidence of CLRV is thought to be rare, however it is found in 7% of cadavers donated for anatomy. CLRV may cause unexpected bleeding by inadvertent dissection of the abdominal aorta. To prevent unexpected bleeding, surgeons should always keep in mind this potential risk when performing surgery.
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