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Fig. 1D. 24-year-old woman with small pancreatic duct stone causing
duct obstruction and segmental pancreatitis. Contrast-enhanced CT scan shows
punctate high-density focus (arrow) in pancreatic duct representing
small intraductal stone. This example illustrates the advantage of CT in
showing tiny intraductal stone that was not seen on MRI. It, however, also
illustrates the advantage of MRI in showing changes of signal intensity
associated with chronic pancreatitis that are not visible on CT.