A. An axial T2-weighted image of a 9-year-old child shows 2 ducts (arrows) in the head of the pancreas. B. The anterior duct (Santorini) (arrow) drains the majority of the pancreas and extends toward the minor papilla. The smaller duct (arrow) in the posterior aspect of the pancreatic head is the duct of Wirsung; this drains via the major papilla.