Figure 28. Acute pancreatitis, pancreatic duct disruption, and pseudocyst demonstrated with MRCP after administration of secretin (A) and with coronal (B) and axial (C, D) HASTE T2-weighted sequences with fat suppression. In A, a pancreatic duct defect (arrow) not filled by secretin is seen in conjunction with a heterogeneous pseudocyst (*) and an upstream dilatation of the pancreatic duct (arrowhead). The pseudocyst wall, internal septation (arrowhead in D), and topography are better depicted in B—D.