Endoscopic retrograde cholangiopancreatography in patients with altered anatomy: How to deal with the challenges?

Figure 5 A patient with Roux-en-Y gastric bypass. A: Computed tomography of a retroperitoneal perforation (white arrow) at the level of papilla of Vater after sphincterotomy and sphincteroplasty in a patient with Roux-en-Y gastric bypass; B: Radiological view of hepatic capsule dehiscence without free abdominal air (white arrow) due to barotrauma in the closed afferent limb during single-balloon enteroscopy endoscopic retrograde cholangiopancreatography in a patient with Billroth II partial gastrectomy. Common bile duct stone retrieval with a basket is being performed.