RESUMO
A 52-year-old man presented with a pulsatile mass in the right groin. He had undergone lumbar sympathectomy and aorto-right femoral artery bypass using an 8mm Microvel double velour graft, 14 years previously, for aortoiliac occlusive disease caused by thromboangiitis obliterans. Based on a clinical diagnosis of an anastomotic aneurysm, an operation was performed. When the aneurysm was incised, it was found that the anastomosis of the graft to the femoral artery was intact and that the graft itself had a defect, 3cm in size on the anterior wall, 1.5cm proximal to the distal anastomosis. The final diagnosis was a nonanastomotic false aneurysm due to prosthetic graft failure. The failed portion of the graft was resected, and a 10mm Hemashield Gold woven double velour graft was interposed between the old graft and the right femoral artery. Generally, arterial grafts below the groin are subject to high levels of mechanical stress, and graft failure is not uncommon. Vascular surgeons should keep in mind that graft failure is not rare in patients with long-standing prosthetic grafts.
RESUMO
A 64-year-old man was admitted with intermittent high fever of 4 months duration and with three episodes of arterial embolism in the previous 2 months. Several investigations revealed evidence that those episodes involving bilateral popliteal arteries and the left external iliac artery originated from mycotic emboli. Severe mitral insufficiency due to infective endocarditis was also recognized. The ischemic symptoms improved after medical treatment. Despite antibiotic therapy for 4 weeks, inflammatory signs did not subside. Since aneurysm formation of the left external iliac artery at the embolized portion was detected on CT, mitral valve replacement and aneurysmectomy with femoro-femoral grafting were done concomitantly. Inflammatory signs disappeared immediately after the operation. Pathological findings indicated organization of the mitral vegetation and evidence of active infection in the aneurysm wall. Though aneurysmal change of a symptomatic embolized site is not common, the preoperative evaluation of possible associated mycotic aneurysm is important to decide on surgical strategy for infective endocarditis complicated by embolism.