We report a case of aortoduodenal fistula formed after an abdominal aortic aneurysm ruptured into the duodenum. There is also an aortic dissection involving the celiac trunk, superior mesenteric artery and renal arteries. Successful treatment was achieved through endovascular aortic repair, followed by anti-infective and supportive therapy over 3 months.

A 70-year-old unconscious man with hospital phobia was transported to our hospital. On arrival, he displayed consciousness disturbance, unstable circulation, and a hypothermic state. Based on the clinical symptoms, the results of whole body computed tomography (CT), and biochemical studies, he was diagnosed with urosepsis (induced by vesico-enteric fistula), hyperglycemic crisis, infectious abdominal aortic aneurysm (iAAA), gallbladder stone-induced pancreatitis, and multiple organ failure. He was treated with supportive therapy. The abdominal magnetic resonance image (MRI) revealed an abdominal aortic aneurysm (AAA) with an inflammatory aortic wall, paraaortic inflammatory lymph node swelling, and periaortic fat inflammation. His consciousness temporarily recovered, but he did not agree to undergo surgery. On day 28, he suddenly collapsed. We present a fatal case of iAAA induced by urosepsis from vesico-enteric fistula and/or acute pancreatitis, complicated by multiple organ failure. In aging societies, physicians should explore not only the cause of disease but also the severity of the pathology and define fatal complications in elderly patients.

Infectious aortic aneurysm, defined as a focal dilation of an infectious arterial wall, is an uncommon life-threatening disease. Compared with open surgery, endovascular repair yields acceptable clinical outcomes. However, residual tissue infection may increase the risk of secondary intervention. Here, we present a successful case of endovascular repair combined with staged drainage for the treatment of infectious aortic aneurysm.
A 58-year-old man presented to hospital with a 3-day history of lower back pain radiating to the back associated with fever. The dynamic imaging characteristics revealed rapid progress of infectious abdominal aortic aneurysm with negative blood culture. The patient underwent endovascular repair and salmonella enteritidis was identified through drain culture.
Endovascular procedure and staged drainage can be feasible and effective option in selected cases.