Endoscopic placement of expandable metal stents for biliary strictures--a preliminary report on experience with 33 patients.

Endoscopy
K HuibregtseG N Tytgat

Abstract

The main problem with palliative treatment of extrahepatic cholestasis with an endoscopic biliary endoprosthesis is clogging. One of the factors thought to be of importance is the diameter of the stent. In order to avoid being limited by the size of the instrumentation channel of the endoscope, expandable stents have been developed. In this article we report on our preliminary clinical experience with an endoscopically placed expandable metal stent ("Wallstent") in 33 patients with extrahepatic bile duct stenoses. When fully expanded, the stent has a diameter of 30 F and a length of 6.7 cm. It was possible to successfully place a stent in every patient. Clinical improvement was achieved in all patients except one. Two patients underwent elective surgery, while one died of renal failure. Another died of septic shock after 5 weeks, but no autopsy was performed. In conclusion, our initial experience with this stent shows that at least in the short term biliary drainage was excellent, with no complications of pancreatitis or hemorrhage. Longer follow-up than our 4 weeks is necessary to establish the position of this stent in comparison with the conventional endoprosthesis in the management of obstructive jaundice.

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