Surgical Repair of an Abdominal Aortic Aneurysm in Association with a Horseshoe Kidney: A Case Report

ABSTRACT

Horseshoe kidney (HSK) is an unusual congenital anomaly showing fusion of both kidneys anterior to the aorta. Surgical repair of an abdominal aortic aneurysm (AAA) concomitant with HSK may be technically demanding because of the complex anomaly of the kidney and of its collecting system and arteries. We report a 76-year-old man with an AAA associated with HSK. The preoperative CT angiography showed a HSK and an AAA measuring 6.4 cm in diameter. In addition, there was an aberrant isthmus renal artery arising from the aneurysm. The aneurysm was exposed via a transperitoneal approach and the AAA repair was performed successfully without division of the isthmus of the HSK. The aberrant renal artery and inferior mesenteric artery were successfully re-implanted to the graft. The renal function showed no impairment postoperatively.