CT retrograde pancreatography using an indwelling balloon catheter.

We report a new technique for computed tomography (CT) of the pancreas during retrograde injection of contrast material into the pancreatic duct via an in situ balloon catheter placed by duodenoscopy (CT-RP). The method resulted in more stable ductgrams at CT than were obtained with other methods. Our data suggest that CT-RP provides useful information in evaluating pancreatic lesions that produce subtle or insignificant abnormalities of the outline of the pancreas and the ductal system on conventional CT and ERP.