Figure 26. Pancreatic duct disruption and pseudocyst complicating acute pancreatitis demonstrated with MRCP before (A) and after (B, C) secretin administration and a coronal HASTE T2-weighted sequence (D). In C, a more targeted projection clearly demonstrates the communication (arrow) of the pseudocyst with a pancreatic fistula originating in the tail (arrowhead). Note that the pancreatic duct appears normal (arrow in B) downstream to the rupture. In B, the pseudocyst (*) increased in volume compared to that seen in A, suggesting a communication with the pancreatic duct. In D, the topography of the fistula (arrow) is better demonstrated.