False Aneurysm in the Right Groin due to Disruption of a Knitted Dacron Prosthesis / 日本心臓血管外科学会雑誌

ABSTRACT

A 75-year-old man was admitted to our hospital with a pulsatile mass in the bilateral groin. He had received placement of a Y-shaped Cooley double velour knitted Dacron graft 20 years previously for arteriosclerosis obliterans. Computed tomography demonstrated an aneurysm near the distal anastomosis of the graft. Based on a clinical diagnosis of a non-anastomotic aneurysm, an operation was performed. When the right aneurysm was incised, it was found that the anastomosis of the graft to the common femoral artery was intact and that the graft itself had a defect, 1.5 cm in size near the distal anastomosis of the graft. The final diagnosis of the right groin aneurysm was a non-anastomotic false aneurysm due to prosthetic graft failure. The left groin aneurysm was a true aneurysm due to arteriosclerosis. After resection of the bilateral aneurysm, graft interposition with an expanded polytetrafluoroethylene (ePTFE) graft was successfully performed. 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 graft.