Fig. 2From: Successful access to the ampulla for endoscopic retrograde cholangiopancreatography in patients with situs inversus totalis: a case report a, b The endoscope rotate in 180° counterclockwise in the stomach, and shortened by again rotating 180° to the counterclockwise in the duodenum. c In the endoscopic view, the ampulla was deviated to the right and right-sided direction The bile duct direction (white arrow), catheter device direction (blue arrow), and angle between two vectors (white line) are indicatedBack to article page