Chronic contained rupture of abdominal aortic aneurysm that developed from chronic abdominal aortic dissection

Abstract Chronic contained rupture is an extremely rare subtype of abdominal aortic aneurysm rupture. We report the case of a 59-year-old man with a medical history of traumatic lumber fracture 7 years ago. He presented to us with an asymptomatic irregular abdominal aortic aneurysm, and surgery was performed a week after he was hospitalized. Based on the medical history, imaging, blood tests, and pathological results, we determined that chronic contained rupture progressed from a localized abdominal aortic dissection. This case illustrates the need to follow the morphology of aortic aneurysms if chronic abdominal aortic dissection is observed.