Bilateral Retroperitoneal Approach to Repairing a Ruptured Right Iliac Artery Aneurysm in a Patient who has Undergone Transperitoneal Abdominal Surgery

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An 84-year-old woman with a history of surgery for cholangiocarcinoma presented to Akita University Hospital with severe right lower abdominal pain, respiratory distress, and hypotension. Computed tomography scanning revealed a ruptured right common iliac artery aneurysm with a massive right retroperitoneal hematoma and a right internal iliac artery aneurysm. Under the bilateral retroperitoneal approach, we preformed an in-situ repair of an aneurysm rupture from the aorta to the left common and right external iliac arteries using a bifurcated knitted Dacron graft, and then we ligated the right internal iliac artery. The postoperative course of the patient was uneventful. The patient was discharged from hospital 52 days after surgery. In conclusion, a bilateral retroperitoneal approach may be a safe and useful strategy for in-situ repair of a right iliac artery aneurysm rupture in patients with peritoneal adhesions after transperitoneal abdominal surgery.