title: Endovascular Stent Placement for May-Thurner Syndrome in the Absence of Acute Deep Vein Thrombosis.
abstract: OBJECTIVE
  To assess the clinical utility of iliac vein stent placement for patients with chronic limb edema or pelvic congestion presenting with nonocclusive May-Thurner physiology.
  
  
  METHODS
  All patients (N = 45) undergoing stent placement for May-Thurner syndrome (MTS) without an associated acute thrombotic event between 2007 and 2014 were retrospectively reviewed; 11 were excluded for poor follow-up. A total of 34 patients (28 female) were studied (mean age, 44 y; range, 19-80 y). Average follow-up time was 649 days (median, 488 d; range, 8-2,499 d).
  
  
  RESULTS
  The technical success rate was 100% (34 of 34). No major and two minor (5%) complications occurred, and 68% of patients (23 of 34) had clinical success with relief of presenting symptoms on follow-up visits. Technical parameters including stent size and number, stent type, concurrent angioplasty, access site, and resolution of collateral iliolumbar vessels were not found to be statistically related to clinical success (P > .05). Similarly, no significant relation to clinical success was seen for clinical factors such as the type of symptoms, presence of chronic deep vein thrombosis (DVT), or concurrent coagulopathy (P > .05). Female sex was found to correlate with clinical success (82% vs 18%; P = .04).
  
  
  CONCLUSIONS
  Iliac stent placement in patients presenting with chronic limb or pelvic symptoms from MTS without acute DVT is associated with clinical success in the majority of patients.
authors.affiliation: Division of Interventional Radiology, Stanford University Medical Center, 300 Pasteur Dr., H3630, MC 5642, Stanford, CA 95305. Electronic address: osman1423@gmail.com.
authors.forename: Osman
authors.initials: O
authors.lastname: Ahmed
authors.affiliation: Division of Interventional Radiology, Stanford University Medical Center, 300 Pasteur Dr., H3630, MC 5642, Stanford, CA 95305.
authors.forename: Joshua
authors.initials: J
authors.lastname: Ng
authors.affiliation: Department of Radiology, University of Chicago Medicine, Chicago, Illinois.
authors.forename: Mikin
authors.initials: M
authors.lastname: Patel
authors.affiliation: Division of Interventional Radiology, Stanford University Medical Center, 300 Pasteur Dr., H3630, MC 5642, Stanford, CA 95305.
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Ward
authors.affiliation: Division of Interventional Radiology, Stanford University Medical Center, 300 Pasteur Dr., H3630, MC 5642, Stanford, CA 95305.
authors.forename: David S
authors.initials: DS
authors.lastname: Wang
authors.affiliation: Division of Interventional Radiology, Stanford University Medical Center, 300 Pasteur Dr., H3630, MC 5642, Stanford, CA 95305.
authors.forename: Rajesh
authors.initials: R
authors.lastname: Shah
authors.affiliation: Division of Interventional Radiology, Stanford University Medical Center, 300 Pasteur Dr., H3630, MC 5642, Stanford, CA 95305.
authors.forename: Lawrence V
authors.initials: LV
authors.lastname: Hofmann
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D062108:May-Thurner Syndrome / Q000601:surgery*; D008875:Middle Aged; D012189:Retrospective Studies; D015607:Stents; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome