Abstract
Isolated left-side inferior vena cava is rare, there being only four cases associated with abdominal aortic aneurysm reported so far in the Japanese literature. A 72-year-old man was admitted to our hospital for the evaluation of an abdominal pulsatile mass. CT scan revealed abdominal aortic aneurysm with isolated left-sided inferior vena cava. Aneurysmectomy and bifurcated graft replacement was performed with retracting inferior vena cava. The postoperative course was uneventful.