Figure 4a. Pancreatic necrosis in a 50-year-old woman after an episode of acute pancreatitis. (a, b) Transverse CT scans obtained with intravenous and oral contrast material reveal an encapsulated fluid collection associated with liquefied necrosis (large straight arrows in a) in the body of the pancreas. The head, part of the body, and the tail of the pancreas are still enhancing (small straight arrows in a, straight arrows in b). Residual fluid collections and areas of soft-tissue attenuation (curved arrow) consistent with fat necrosis are seen adjacent to the pancreas. f = fluid, N = liquefied gland necrosis, S = stomach.