Figure 6From: Ectopic opening of the common bile duct and duodenal stenosis: an overlooked association Cannulation of ectopic CBD opening in case of AS. Blind cannulation while endoscope is proximal to AS (A). Tight AS and air in the bile ducts (left); cannulation on the stomach side shown (right)(B). Stone removal on the stomach side in the same patient (C).Back to article page