title: "Accordion" deformity of a tortuous external iliac artery after stent-graft placement.
abstract: OBJECTIVE
  To identify a complication of endograft deployment in aneurysmal iliac arteries.
  
  
  METHODS
  A 71-year-old man was referred for endovascular treatment of a 60-mm-diameter right common iliac artery aneurysm; however, deployment of a homemade covered stent (Palmaz-Schatz and polytetrafluoroethylene) induced shortening of the tortuous external iliac artery, causing an "accordion" deformity. The anomaly proved difficult to treat with serial Wallstent deployment, because the convolution tightened and migrated caudally with each stent deployed, threatening outflow. Finally, after 3 Wallstents were implanted, the contour of the external iliac artery was straight, and flow was unimpeded. However, 3 weeks later, the external iliac artery had recoiled to its original redundant appearance, but flow remained satisfactory. The aneurysm remains excluded, with satisfactory distal flow after 24 months.
  
  
  CONCLUSIONS
  Implanting endografts in redundant, tortuous arterial segments may prove problematic, since induced straightening by the device precipitates kinking in the redundant system. Although treatment may be required in some situations, the vessels may return to a noncompressed state by removing the delivery system and guidewire.
authors.affiliation: Radiology Associates, PC, Eugene, Oregon 97440, USA. quinnst@teleport.com
authors.forename: S F
authors.initials: SF
authors.lastname: Quinn
authors.forename: J
authors.initials: J
authors.lastname: Kim
authors.forename: R C
authors.initials: RC
authors.lastname: Sheley
authors.forename: J H
authors.initials: JH
authors.lastname: Frankhouse
mesh_terms: D000368:Aged; D000783:Aneurysm / Q000628:therapy*; D000792:Angiography; D001807:Blood Vessel Prosthesis; D004867:Equipment Design; D006801:Humans; D007083:Iliac Artery / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D008297:Male; D012039:Regional Blood Flow; D015607:Stents / Q000009:adverse effects*; D016896:Treatment Outcome