An aortoduodenal fistula as a complication of immunoglobulin G4-related disease

Figure 1 An infrarenal aneurysm (arrow) of the abdominal aorta with gas collection in a suspected thrombotic mass in the aneurysmatic sac, suggesting an aortoenteric fistula.

Figure 2 Intraoperative computed tomography angiography after endovascular repair of abdominal aortic aneurysm with excluder stent graft.

Figure 3 Control computed tomography angiography. A: Control computed tomography (CT) angiography shows no endoleaks and reduction of thrombotic mass volume in the aneurysmatic sac with persistence of gas collection; B: Control CT angiography after 6 mo showed no endoleaks and near total reduction of thrombotic mass in the aneurysmatic sac, without gas collection.