Figure 2.

Peripancreatic necrosis alone. (A) A schematic diagram shows peripancreatic fat necrosis only. Acute necrotizing pancreatitis (peripancreatic fat necrosis alone) in a 62-year-old man. An axial MR T1-weighted fat-suppressed image (B) reveals an enlarged pancreas with a marked decrease in signal intensity and acute necrotic collections admixed with patchy hypointense areas indicative of fat necrosis (arrows). Corresponding contrast-enhanced venous phase CT image (C) shows the normal enhancement of the pancreas and peripancreatic fat necrosis (arrows) with a measured average CT value of −56 HU. P, pancreas; FT, fat tissue.