Renal malformations during surgery for repair of an abdominal aortic aneurysm are a rare occurrence that can create technical problems during the operation in terms of preservation of renal parenchyma and vascularisation. A case of abdominal aortic aneurysmectomy associated with an ectopic pelvic kidney is presented. Preoperative diagnosis is necessary in order to plan the surgical technique to be employed in each anatomical variant encountered.