Figure 19.

(a) In this case, the opening of the Santorini duct is seen in the wall of the duodenum approximately 2.5 cm above the opening of bile duct in the major papilla. The small yellow arrow shows the opening of the duct of Santorini, which in this case is the major duct draining the pancreas. The VP duct in this case is seen beyond the bile duct and drains only the VP (small white arrow). The diameter of the duct of Santorini is greater than the diameter of the duct of Wirsung. (b) The arrows show the course of the duct of Santorini