Comparison between uncovered and covered self-expandable metal stent placement in malignant duodenal obstruction

Figure 1 Overall stent patency between the uncovered (solid line) and covered stent groups (dotted line; P = 0. 033).

Figure 2 Images from an 81-year-old man with bladder cancer with multiple metastases. A: Computed tomographic (CT) scan obtained 18 d after stent placement showing significant dilatation of the intrahepatic bile duct (long arrow); B: CT scan obtained 18 d after stent placement at the level of the ampulla of Vater (AOV) showing significant dilatation of the common bile duct due to the compression of the inserted stent (long arrow) to the AOV (arrowheads).