Polyurethane-covered wallstents to recanalize wallstents obstructed by tumor ingrowth from malignant common bile duct obstruction

Journal Article · Wed Mar 15 04:00:00 EST 2000 · Cardiovascular and Interventional Radiology

DOI:https://doi.org/10.1007/BF03035509· OSTI ID:21414408

Nakamura, Toshifumi; Kitagawa, Mutsuo; Takehira, Yasunori; Yamada, Masami ^[1]; Kawasaki, Tsunehisa; Nakamura, Hirotoshi ^[2]

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1. Hamamatsu Medical Center, Department of Gastroenterology (Japan)
2. Hamamatsu University School of Medicine, Second Department of Internal Medicine (Japan)

Four patients with malignant obstruction of the common bile duct had been treated with uncovered Wallstents and suffered from a reobstruction after 2-13 months (mean 5.3 months). Repeat cholangiography revealed severe stenosis of the stent lumen caused by tumor ingrowth through the mesh. A Wallstent with a self-made polyurethane-cover was inserted through the uncovered stent in these patients. The four patients were followed for 3-13 months (mean 6.3 months) until death. There was good drainage with no evidence of recurrent obstruction in all patients. We conclude that a covered Wallstent may extend patency of stented bile ducts, preventing tumor ingrowth in patients with neoplastic obstruction. Further observations are needed.

• OSTI ID: 21414408
• Journal Information: Cardiovascular and Interventional Radiology, Journal Name: Cardiovascular and Interventional Radiology Journal Issue: 2 Vol. 23; ISSN 0174-1551; ISSN CAIRDG
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
BILIARY TRACT
DIGESTIVE SYSTEM
DISEASES
MATERIALS
NEOPLASMS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYAMIDES
POLYMERS
POLYURETHANES
SYNTHETIC MATERIALS
TUBES