Figure 7c. Covered stent placement in a patient with unresectable adenocarcinoma of the duodenum. (a) Oblique radiograph from an upper gastrointestinal study shows a stricture of the first portion of the duodenum (arrow). (b) On an anteroposterior radiograph obtained during placement of a covered stent, the distal end of the stent is partially deployed (arrow). Metallic markers denote the location of the stricture. (c) Anteroposterior radiograph shows a fully expanded covered duodenal stent (arrow). (d) Oblique radiograph from an upper gastrointestinal study shows the stent in the duodenum (arrows) with a patent lumen.