Endoscopic retrograde cholangiopancreatography in children with symptomatic pancreaticobiliary maljunction: A retrospective multicenter study

Figure 1 Fluoroscopy images of four pancreaticobiliary maljunction types. A: Type A (stenotic type). The stenotic segment of the distal common bile duct joins the common channel, with the dilatation of the common bile duct; B: Type B (non-stenotic type). The distal common bile duct without any stenotic segment smoothly joins the common channel; C: Type C (dilated channel type). The common channel is dilated, the narrow segment of the distal common bile duct joins the common channel, and abrupt dilatation of the common channel is seen; D: Type D (complex type). Complicated union of the pancreaticobiliary ductal system occurs as follows: Pancreaticobiliary maljunction is associated with annular pancreas, pancreatic divisum, or other duct system complications.