Left: Benign inflammatory post-bulbar duodenal stricture in a 79 year-old man with a history of peptic ulcer disease, and symptoms of partial gastric outlet obstruction.

Right: Post-bulbar duodenal stricture in a 61 year-old woman with a history of peptic ulcer disease, who had presented with symptoms suggestive of partial gastric outlet obstruction.

Left: Tight peptic stricture with associaated ulceration, in the post-bulbar duodenum of a 75 year-old man with symptoms of delayed gastric emptying. Right: Improved caliber of the lumen following dilation with a trans-endoscopic balloon catheter.