Predictors of the patency of self-expandable metallic stents in malignant gastroduodenal obstruction

Figure 1 Gastric outlet obstruction. A: The injection of the contrast medium shows the stricture (arrow); B: A 9 cm stent was successfully placed, and the passage of contrast medium was visible.

Figure 2 Study flow chart. CEA: Carcinoembryonic antigen.

Figure 3 Receiver operating characteristic curve of the carcinoembryonic antigen level for predicting stent patency. ROC: Receiver operating characteristic; CEA: Carcinoembryonic antigen.

Figure 4 Comparison of carcinoembryonic antigen levels based on the type of malignancy. CEA: Carcinoembryonic antigen.

Figure 5 Stent patency rate according to carcinoembryonic antigen level. CEA: Carcinoembryonic antigen.