title: Persistent sciatic artery aneurysm.
abstract: A persistent sciatic artery (PSA) is an exceptionally rare embryologic vascular anomaly with a reported incidence of 0.01-0.05% based on angiography. Most PSAs do not require treatment and 50% of affected individuals are asymptomatic. However, all PSA-related aneurysms should be treated because they involve a high risk of complications.We report the case of 53-year-old man with a 7-cm aneurysm arising from a left dominant PSA together with a hypoplastic left femoral artery, who presented with acute left limb ischemia. The patient had realized the presence of a pulsating mass in his left buttock 12 months before the ischemic event. He was treated initially with below-knee popliteal embolectomy and exclusion of the aneurysm with 2 overlapping, self-expanding, 10×50-mm stent grafts. On diagnosis, PSA aneurysms require neither potentially harmful ligation nor a technically challenging open procedure. Endovascular aneurysm exclusion using an antegrade or a retrograde approach is safe and efficient; however, long-term follow-up is required to establish the efficacy of this endovascular procedure.
authors.affiliation: Department of Vascular and Endovascular Surgery, Specialties Hospital Western Medical Center Mexican Institute of Social Security, Guadalajara, Jalisco, México.
authors.forename: Cesar
authors.initials: C
authors.lastname: Nuño-Escobar
authors.forename: Mario Alberto
authors.initials: MA
authors.lastname: Pérez-Durán
authors.forename: Rubén
authors.initials: R
authors.lastname: Ramos-López
authors.forename: Guillermo
authors.initials: G
authors.lastname: Hernández Chávez
authors.forename: Francisco
authors.initials: F
authors.lastname: Llamas-Macías
authors.forename: María
authors.initials: M
authors.lastname: Baltazar-Flores
authors.forename: Alejandro
authors.initials: A
authors.lastname: González-Ojeda
authors.forename: Michel Dassaejv
authors.initials: MD
authors.lastname: Macías-Amezcua
authors.forename: Clotilde
authors.initials: C
authors.lastname: Fuentes-Orozco
mesh_terms: D000783:Aneurysm / Q000150:complications / Q000175:diagnosis / Q000601:surgery; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation / Q000295:instrumentation; D002081:Buttocks / Q000098:blood supply*; D017128:Embolectomy; D057510:Endovascular Procedures / Q000295:instrumentation; D005263:Femoral Artery / Q000002:abnormalities; D006801:Humans; D007083:Iliac Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D007511:Ischemia / Q000209:etiology; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D011859:Radiography; D015607:Stents; D016896:Treatment Outcome; D054079:Vascular Malformations / Q000150:complications / Q000175:diagnosis / Q000601:surgery