title: Iliac vein stenting as a durable option for residual stenosis after catheter-directed thrombolysis and angioplasty of iliofemoral deep vein thrombosis secondary to May-Thurner syndrome.
abstract: BACKGROUND
  This study aims to evaluate the primary patency and clinical outcomes after stenting for residual iliac venous stenosis during catheter-directed thrombolysis treatment of acute iliofemoral deep vein thrombosis arising from May-Thurner syndome.
  
  
  METHODS
  A retrospective study was done for the all patients who underwent iliac vein stenting after catheter-directed thrombolysis treatment of acute iliofemoral deep vein thrombosis due to May-Thurner syndrome from January 2005 to April 2011 in Inha University Hospital. Patient information was assembled from the electronic medical records, imaging and interview. The patency of iliac vein stent was evaluated with serial computed tomography.
  
  
  RESULTS
  Fifty-one patients were enrolled. The median age was 70 years (range 44-86). There were 37 females (72.5%). The duration of symptoms of acute deep vein thrombosis before catheter-directed thrombolysis treatment was 6 days (median, range 1-33). Self-expanding stent was used for iliac vein stenting. Initial technical success rate was 94.1%. There were two complications (3.9%): an arteriovenous fistula formation in left popliteal area and a right inguinal hematoma. Mean follow-up was 15.6 months (range 6 days-80.8 months). Primary patency rate after iliac vein stenting was 95.8% at 6 months, 87.5% at 12 months and 84.3% at 24 months. Four patients had recurrent thrombotic occlusion (7.8%) during the follow-up.
  
  
  CONCLUSIONS
  Iliac vein stenting showed good primary patency rate with few complications. Iliac vein stenting is a durable option for residual stenosis after catheter-directed thrombolysis treatment of acute deep vein thrombosis in May-Thurner syndrome.
authors.affiliation: Department of Surgery, Inha University School of Medicine, Incheon, Korea.
authors.forename: Jae Young
authors.initials: JY
authors.lastname: Park
authors.affiliation: Department of Surgery, Inha University School of Medicine, Incheon, Korea.
authors.forename: Jong Hyuk
authors.initials: JH
authors.lastname: Ahn
authors.affiliation: Department of Radiology, Inha University School of Medicine, Incheon, Korea.
authors.forename: Yong Sun
authors.initials: YS
authors.lastname: Jeon
authors.affiliation: Department of Radiology, Inha University School of Medicine, Incheon, Korea.
authors.forename: Soon Gu
authors.initials: SG
authors.lastname: Cho
authors.affiliation: Division of Vascular Surgery, Department of Surgery, School of Medicine, The Catholic University of Korea, Seoul, Korea vascularkim@catholic.ac.kr.
authors.forename: Jang Yong
authors.initials: JY
authors.lastname: Kim
authors.affiliation: Department of Surgery, Inha University School of Medicine, Incheon, Korea.
authors.forename: Kee Chun
authors.initials: KC
authors.lastname: Hong
mesh_terms: D061605:Administration, Intravenous; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017130:Angioplasty / Q000009:adverse effects / Q000295:instrumentation*; D002406:Catheterization, Peripheral; D005260:Female; D005268:Femoral Vein / Q000000981:diagnostic imaging / Q000503:physiopathology; D005343:Fibrinolytic Agents / Q000008:administration & dosage*; D006785:Hospitals, University; D006801:Humans; D007084:Iliac Vein / Q000000981:diagnostic imaging / Q000503:physiopathology; D053208:Kaplan-Meier Estimate; D008297:Male; D062108:May-Thurner Syndrome / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy*; D008875:Middle Aged; D010690:Phlebography / Q000379:methods; D012008:Recurrence; D056910:Republic of Korea; D012189:Retrospective Studies; D015607:Stents; D015912:Thrombolytic Therapy / Q000379:methods*; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014654:Vascular Patency; D020246:Venous Thrombosis / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology / Q000628:therapy*
chemical_list: D005343:Fibrinolytic Agents
keywords: Deep vein thrombosis; May–Thurner syndrome; iliac veins; stent