title: Liver transplantation in a patient with complex anomaly of the inferior vena cava.
abstract: BACKGROUND
  After the introduction of noninvasive imaging exams, congenital anomalies of the inferior vena cava (IVC) have become more commonly recognized. We report the first successful orthotopic liver transplantation (OLT) performed in an asymptomatic adult with complex IVC anomaly: duplication of the infrarenal IVC, azygos continuation of the IVC, agenesia of the hepatic portion of the IVC and presence of several anomalous veins communicating the common iliac vein and the IVC of one side with the contralateral side.
  
  
  METHODS
  This complex anomaly was diagnosed with a venous abdominal angio CT.
  
  
  RESULTS
  At liver transplantation, the short suprahepatic portion of the IVC was identified and clamped. The right, middle, and left hepatic veins were sectioned and joined in a single, wide cuff, using venoplasty. This single orifice was anastomosed to the suprahepatic IVC of the new liver. No venovenous bypass was employed. The patient had an uneventful postoperative course. A post transplantation venous abdominal angio CT showed normal blood flow at the anastomosis of the hepatic veins of the receptor and the IVC of the new liver.
  
  
  CONCLUSIONS
  This report is important to alert liver transplant teams of the possibility of complex IVC in asymptomatic adult individuals. Identification of these anatomical anomalies is vital to reduce the risk of serious hemorrhage and other operative complications during OLT.
authors.affiliation: Hospital N. S. das Graças, Department of Surgery, Federal University of Paraná, Brazil.
authors.forename: Julio C U
authors.initials: JC
authors.lastname: Coelho
authors.affiliation: Hospital N. S. das Graças, Department of Surgery, Federal University of Paraná, Brazil.
authors.forename: Eduardo J B
authors.initials: EJ
authors.lastname: Ramos
authors.affiliation: Hospital N. S. das Graças, Department of Surgery, Federal University of Paraná, Brazil.
authors.forename: Marco A R
authors.initials: MA
authors.lastname: da Costa
authors.affiliation: Hospital N. S. das Graças, Department of Surgery, Federal University of Paraná, Brazil.
authors.forename: Alcindo
authors.initials: A
authors.lastname: Pissaia
authors.affiliation: Hospital N. S. das Graças, Department of Surgery, Federal University of Paraná, Brazil.
authors.forename: Claudia A P
authors.initials: CA
authors.lastname: Junior
authors.affiliation: Hospital N. S. das Graças, Department of Surgery, Federal University of Paraná, Brazil.
authors.lastname: Ivantes
keywords: Liver transplantation; congenital anomalies; inferior vena cava (IVC); vena cava duplication