Teenager in a motor vehicle accident with abdominal pain

CT and US of pancreatic trauma / traumatic pancreatitis
Axial CT with contrast of the abdomen (above) shows an enlarged pancreatic head with some mild intrahepatic biliary dilation and non-visualization of the common bile duct. Transverse US of the pancreas obtained a day later (below) shows an enlarged hypoechoic pancreatic head.

The diagnosis was pancreatitis causing common bile duct obstruction.