The pancreas is oedematous and surrounded by a large volume of free fluid, in keeping with acute pancreatitis. There is some subtle reduction in density in the uncinate process, head, neck and proximal body of the pancreas, but this may be due to oedema rather than necrosis at this early stage. The portal and splenic veins are patent. The liver has a diffusely reduced density in keeping with fat infiltration. No gallstones identified. The free fluid tracks in the retroperitoneum towards the pelvis. Appearances elsewhere unremarkable.