Bile duct obstruction after transjugular intrahepatic portosystemic shunt implantation
22. März 2013 (online)
Transjugular intrahepatic portosystemic shunt (TIPS) implantation is a standard treatment option for patients with liver cirrhosis and the complications of portal hypertension . The safety and efficacy of the procedure have been studied extensively . Biliary complications are rare and comprise biliary fistula and bilioma  .
A 50-year-old woman with alcoholic liver cirrhosis was admitted with progressive jaundice. She had received a TIPS (Viatorr, 8 cm; Gore, Newark, Delaware, USA) 18 months earlier for refractory ascites but rectangular stent entry in the portal vein had caused poor TIPS flow. Therefore, 8 months after the primary procedure, an overlapping stent (20 mm extension) had been placed because of recurrent ascites. Thereafter, the hepatic venous pressure gradient decreased from 24 mmHg to 7 mmHg.
On admission, her liver function tests results were all elevated: total bilirubin 483.7 μmol/L, alkaline phosphatase 3.85 μkat/L, gamma glutamyl transferase 2.40 μkat/L, aspartate aminotransferase 1.82 μkat/L, and alanine aminotransferase 2.83 μkat/L. An ultrasound scan showed dilated bile ducts in the right hepatic lobe distal to the portal TIPS entry point ([Fig. 1]). The patient underwent endoscopic retrograde cholangiography, which revealed a severe obstruction to a branch of the right hepatic bile duct without intraductal blockage ([Fig. 2]). A computed tomography (CT) scan confirmed bile duct compression by the TIPS extension ([Fig. 3]).
The patient was evaluated for liver transplantation. However, because of a relapse of her alcohol abuse, she was regarded as not suitable for transplantation. Although cholestasis persisted in the affected liver segments, biliary drainage was not performed to avoid the potential development of a portobiliary fistula in the compressed bile duct. Biliary stent implantation requires regular follow-up care, which could not be ensured in this noncompliant patient.
This case highlights the risk of mechanical cholestasis as a potential complication of TIPS. As such, jaundice following TIPS implantation should not be considered to be the result only of deterioration in hepatic function. In most cases ultrasound is the method of choice to exclude biliary obstruction in such patients.
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