Nucho R C, Gryboski W A
Arch Surg. 1984 Oct;119(10):1182-4. doi: 10.1001/archsurg.1984.01390220060013.
Aneurysms of vascular prostheses have been repeatedly described as focal or general dilatations. These can be secondary to preimplantation trauma to the graft or to late fiber degeneration. Follow-up of double velour knitted Dacron grafts have shown a significant absence of aneurysm formation, which has been attributed to the increased encapsulation around the graft. We report multiple aneurysm formation six years after implantation in such a graft, a condition that, to our knowledge, has not been described previously. Subsequent macroscopic and scanning electron microscopic examination of the explant disclosed broken textile fibers and distortion of the graft in the area of the aneurysms. The location of the aneurysms and the lack of history or evidence of trauma led us to believe that this was primary fiber degeneration of the graft.
血管假体动脉瘤已被反复描述为局灶性或全身性扩张。这些可能继发于植入前移植物的创伤或后期纤维变性。对双绒针织涤纶移植物的随访显示，动脉瘤形成明显较少，这归因于移植物周围包膜的增加。我们报告了在植入这种移植物六年后出现多处动脉瘤形成的情况，据我们所知，此前尚未有过这种情况的描述。随后对取出的移植物进行宏观和扫描电子显微镜检查发现，动脉瘤区域的纺织纤维断裂且移植物变形。动脉瘤的位置以及缺乏创伤史或证据使我们认为这是移植物原发性纤维变性。
