MRI study shows moderate dilatation of the CHD and CBD as well as the intrahepatic biliary radicals and cystic duct. Ballooning of the gall bladder is also noted. The distal end of the CBD is seen ending in a short segment of abrupt caliber change at the ampulla of Vatter impeding the flow of bile into the duodenum with intraluminal signal voids consistent with multiple stones.
Dilated beaded main pancreatic duct measures about 22 mm with associated marked atrophy of the pancreatic parenchyma, dilated side branches of the pancreatic duct giving a "chain of lakes sign", multiple variable-sized signal voids stones are seen within the main pancreatic duct and its side branches the largest about 15 mm.
An ill-defined mass-like lesion is seen involving the pancreatic uncinate process measures about 2 x 2.5 cm, shows mild diffusion restriction with obliterated surrounding fat planes and small regional lymph nodes.