PURPOSE: We report our preliminary results with a new type of self-expanding covered stent for treatment of malignant biliary obstruction. METHODS: Wallstents, fully covered with high elasticity polyurethane, with an unconstrained diameter of 10 mm and a total length of 69 mm, were placed transhepatically under fluoroscopic guidance in five patients. The length of the biliary obstruction varied between 30-50 mm. At 1 and 3 months (82-98 days) clinical assessment, serum bilirubin measurement, and ultrasound examination of the biliary tree were performed. RESULTS: Initial uncomplicated deployment of the stents and internal drainage was possible in all patients. Distal stent migration resulted in early biliary reobstruction in one patient. At 3-month follow-up, partial reobstruction, most probably due to sludge formation, was found in another patient. CONCLUSION: Our initial results indicate that the covered, self-expanding Wallstent endoprosthesis can be reliably and safely deployed transhepatically for malignant biliary obstruction.
PURPOSE: We report our preliminary results with a new type of self-expanding covered stent for treatment of malignant biliary obstruction. METHODS: Wallstents, fully covered with high elasticity polyurethane, with an unconstrained diameter of 10 mm and a total length of 69 mm, were placed transhepatically under fluoroscopic guidance in five patients. The length of the biliary obstruction varied between 30-50 mm. At 1 and 3 months (82-98 days) clinical assessment, serum bilirubin measurement, and ultrasound examination of the biliary tree were performed. RESULTS: Initial uncomplicated deployment of the stents and internal drainage was possible in all patients. Distal stent migration resulted in early biliary reobstruction in one patient. At 3-month follow-up, partial reobstruction, most probably due to sludge formation, was found in another patient. CONCLUSION: Our initial results indicate that the covered, self-expanding Wallstent endoprosthesis can be reliably and safely deployed transhepatically for malignant biliary obstruction.
Authors: P R Mueller; J T Ferrucci; S K Teplick; E vanSonnenberg; P H Haskin; R J Butch; N Papanicolaou Journal: Radiology Date: 1985-09 Impact factor: 11.105
Authors: M J Lee; S L Dawson; P R Mueller; S Saini; P F Hahn; M A Goldberg; D S Lu; W W Mayo-Smith Journal: Radiographics Date: 1993-11 Impact factor: 5.333
Authors: H Isayama; Y Komatsu; T Tsujino; N Sasahira; K Hirano; N Toda; Y Nakai; N Yamamoto; M Tada; H Yoshida; Y Shiratori; T Kawabe; M Omata Journal: Gut Date: 2004-05 Impact factor: 23.059
Authors: Jae Myoung Choi; Jin Hong Kim; Soon Sun Kim; Jun Hwan Yu; Jae Chul Hwang; Byung Moo Yoo; Sang Heum Park; Ho Gak Kim; Dong Ki Lee; Kang Hyun Ko; Kyo Sang Yoo; Do Hyun Park Journal: Clin Endosc Date: 2012-03-31