Association between renal cysts and abdominal aortic aneurysm: A case-control study.

Objective: To investigate the positive association between the presence of simple renal cysts (SRCs) and abdominal aortic aneurysm (AAA).

Method: In a retrospective case-control study including subjects aged > 50 years, we evaluated the incidence of SRCs on computed tomography (CT) scan. We compared 91 consecutive patients with AAA referred from the Division of Vascular Surgery and 396 patients without AAA, randomly selected after being matched by age and gender from 3,186 consecutive patients who underwent abdominal CT.