Fetal internal iliac artery: Case report and embryologic review

A 25-year-old woman with anomalous circulation to the right leg was seen wi th a symptomatic aneurysm of the abnormal vessel. The artery, which did sha re some features of the classic persistent sciatic artery, also had importa nt differences that were not previously described in the Literature. The pa tient manifested several associated vascular and nonvascular congenital ano malies. She underwent resection of the aneurysm and primary operative repai r of the artery without difficulty. An embryologic interpretation is offere d, and the clinical implications and management strategy are discussed.