Original Articles“Tannenbaum” Teflon stents versus traditional polyethylene stents for treatment of malignant biliary stricture☆
Section snippets
Patients and methods
Between March 1996 and June 1997, 106 patients with malignant strictures were randomly assigned by a central data coordinating center to placement of the TAN stent (Wilson-Cook Medical, Inc.), n = 54, or the Cotton-Leung stent, n = 52. Institutional review board approval was obtained at each participating institution before initiation of the study. Patients with suspected or documented malignant biliary strictures at least 1 cm distal to the hilum and not involving the papilla were eligible for
Results
One hundred six patients were enrolled at 17 participating institutions over a period of 15 months. At the various institutions the number of patients enrolled ranged from 1 to 15. Of the 106 patients, 54 were randomized to a TAN stent and 52 to PE stent.
Discussion
The majority of patients who present with malignant biliary strictures have advanced disease and are incurable by surgical resection. Endoscopic stent placement effectively bypasses the obstructed bile duct in these patients. This prospective, randomized multicenter study evaluated the safety, ease of implantation, and duration of patency of the TAN stent compared with the PE stent. Both stents performed equally well with regard to ease of implantation, stent-related complications, and
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