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Background and Aims: Endoscopic insertion of self-expandable metallic stent (SEMS) is now accepted as first line modality of treatment for palliation in unresectable extra-hepatic biliary obstructive jaundice. This study was done to assess the clinical efficacy and duration of patency of endoscopically inserted metallic stent in un-resectable malignant biliary obstruction. Materials and Methods: Between 2015 to 2017, 101 patients who underwent ERCP and SEMS placement for palliation of malignant biliary obstruction were included prospectively. Main outcome measures were technical success, clinical success, mean duration of SEMS patency, clinical efficacy, rate of biliary re-intervention and survival of patients. Results: Overall technical success and clinical success was achieved in 93% and 82.2% respectively. Mean duration of SEMS patency was 109 days. Analysis in subgroup of patients classified according to site of obstruction (Hilar -68, Distal CBD-33) showed that median duration of stent patency was significantly better in distal biliary stricture (135 days vs 95 days), whereas re-intervention rates were higher in higher biliary stricture than distal stricture (41% Vs 6%). Seven patients with hilar biliary stricture suffered post-SEMS insertion cholangitis. Conclusion: SEMS placement is feasible palliative method for un-resectable malignant biliary obstruction with acceptable technical and clinical success. The duration of SEMS patency and clinical efficacy is significantly better in distal biliary stricture whereas re-intervention rate is higher in hilar biliary stricture.

Self-Expanding Metallic Stents in Malignant Biliary Obstruction-Patency and Clinical Efficacy: A Prospective Study from North India Tertiary Center