title: Percutaneous angioplasty of portal vein stenosis that complicates liver transplantation: the mid-term therapeutic results.
abstract: OBJECTIVE
  We wanted to evaluate the mid-term therapeutic results of percutaneous transhepatic balloon angioplasty for portal vein stenosis after liver transplantation.
  
  
  METHODS
  From May 1996 to Feb 2005, 420 patients underwent liver transplantation. Percutaneous transhepatic angioplasty of the portal vein was attempted in six patients. The patients presented with the clinical signs and symptoms of portal venous hypertension or they were identified by surveillance doppler ultrasonography. The preangioplasty and postangioplasty pressure gradients were recorded. The therapeutic results were monitored by the follow up of the clinical symptoms, the laboratory values, CT and ultrasonography.
  
  
  RESULTS
  The overall technical success rate was 100%. The clinical success rate was 83% (5/6). A total of eight sessions of balloon angioplasty were performed in six patients. The mean pressure gradient decreased from 14.5 mmHg to 2.8 mmHg before and after treatment, respectively. The follow up periods ranged from three months to 64 months (mean period; 32 months). Portal venous patency was maintained in all six patients until the final follow up. Combined hepatic venous stenosis was seen in one patient who was treated with stent placement. One patient showed puncture tract bleeding, and this patient was treated with coil embolization of the right portal puncture tract via the left transhepatic portal venous approach.
  
  
  CONCLUSIONS
  Percutaneous transhepatic balloon angioplasty is an effective treatment for the portal vein stenosis that occurs after liver transplantation, and our results showed good mid-term patency with using this technique.
authors.affiliation: Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Kwang Bo
authors.initials: KB
authors.lastname: Park
authors.forename: Sung Wook
authors.initials: SW
authors.lastname: Choo
authors.forename: Young Soo
authors.initials: YS
authors.lastname: Do
authors.forename: Sung Wook
authors.initials: SW
authors.lastname: Shin
authors.forename: Sung Gi
authors.initials: SG
authors.lastname: Cho
authors.forename: In-Wook
authors.initials: IW
authors.lastname: Choo
mesh_terms: D000328:Adult; D000800:Angioplasty, Balloon; D002648:Child; D003251:Constriction, Pathologic; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D016031:Liver Transplantation; D008297:Male; D008875:Middle Aged; D011169:Portal Vein / Q000000981:diagnostic imaging / Q000473:pathology*; D011183:Postoperative Complications; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D018608:Ultrasonography, Doppler; D014654:Vascular Patency