Shaffer William, Maher Mary, Maristany Michael, Ustunsoz Bahri, Spieler Bradley
Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA.
Department of Radiology, MedStar Harbor Hospital, Baltimore, MD.
Ochsner J. 2017 Summer;17(2):189-194.
Persistent sciatic artery (PSA) is a rare congenital anomaly of the circulation of the lower limb that results from the persistence of an artery that normally regresses early in embryonic development. PSA is usually an incidental finding and is exceedingly rare to find bilaterally.
We present the case of a rare presentation of PSA that resulted in a favorable outcome for a patient who sustained a gunshot wound to his midthigh and discuss the history, embryology, anatomy, classification schema, imaging evaluation, complications, diagnosis, and management of PSA.
PSAs are of doubtful clinical significance when found incidentally at imaging; however, individual patient symptoms, unique arterial anatomy, and the PSA classification best determine the appropriate treatment options.
永存坐骨动脉（PSA）是一种罕见的下肢循环先天性异常，由一条在胚胎发育早期通常会退化的动脉持续存在所致。PSA通常是偶然发现的，双侧出现极为罕见。
我们报告一例罕见的PSA病例，该病例中一名大腿中部受枪伤的患者获得了良好预后，并讨论了PSA的病史、胚胎学、解剖学、分类方案、影像学评估、并发症、诊断及治疗。
PSA在影像学检查中偶然发现时，其临床意义存疑；然而，个体患者的症状、独特的动脉解剖结构以及PSA分类最能确定合适的治疗方案。
