Fig. 25

Paraduodenal pancreatitis. Abdominal CT of a patient with clinical and laboratory findings suggestive of pancreatitis (a–c). The pancreas has normal volume, morphology, and texture. There is retroperitoneal fluid in the right anterior pararenal space (small arrows) and in the pancreatoduodenal groove (big arrows). The posterior wall of the descending duodenum is slightly thickened (arrowhead) and the pancreatoduodenal groove reveals discrete late enhancement (curved arrow on c), suggestive of fibrotic changes. Abdominal CT of another patient with paraduodenal pancreatitis (d–f) shows an ill-defined soft-tissue mass within the groove (arrowheads) and descending duodenal medial wall thickening (arrows)