Knight Benjamin Charles, Tait William F
Department of Vascular Surgery, North Manchester General Hospital, Crumpsall, Manchester, United Kingdom.
Ann Vasc Surg. 2010 Nov;24(8):1135.e13-8. doi: 10.1016/j.avsg.2010.05.017. Epub 2010 Aug 4.
Persistent sciatic artery (PSA) is an exceptionally rare embryological vascular anomaly with a reported incidence, based on angiographic series, of between 0.01 and 0.05%. We report a case of a patient with bilateral PSAs and a unilateral 12-cm aneurysm arising from the left PSA. As with our case, most PSAs are among the dominant arteries that supply blood to the lower limb with aneurysm formation occurring in up to 40% of cases. The femoral artery is often hypoplastic. Presentation usually includes symptoms and signs of an enlarged buttock mass, sciatic nerve compression, and distal limb ischemia. An interposition inlay graft is the preferred method of surgical repair. Dissection of the aneurysm is not recommended because of risk of damage to the sciatic artery. Endovascular stent placement is an accepted method of repair but does not deal with any local symptoms of the expanding aneurysm.
持续性坐骨动脉（PSA）是一种极其罕见的胚胎血管异常，根据血管造影系列报道，其发病率在0.01%至0.05%之间。我们报告一例双侧PSA患者，其左侧PSA出现一个12厘米的单侧动脉瘤。与我们的病例一样，大多数PSA属于供应下肢的主要动脉，高达40%的病例会形成动脉瘤。股动脉常发育不全。临床表现通常包括臀部肿块增大、坐骨神经受压以及肢体远端缺血的症状和体征。置入镶嵌移植物是手术修复的首选方法。由于有损伤坐骨动脉的风险，不建议对动脉瘤进行解剖。血管内支架置入是一种公认的修复方法，但无法处理动脉瘤扩张的任何局部症状。
