Fig. 33.

Perigastric appendagitis in two different patients. a 62-year-old female presented with acute onset epigastric pain. Axial plane postcontrast abdominal CT showed an almost entirely fatty, tubular-shaped lesion with a hyperdense rim (arrowheads) in the gastrohepatic ligament. Findings were considered to represent perigastric appendagitis. Her pain completely subsided with supportive medical treatment. b and c A 54-year-old female presented with acute epigastric pain and a hyperechoic mass-like lesion adjacent to the left liver lobe on US (not shown). b Axial plane T2-weighted MR image revealed a mildly hyperintense mass-like lesion (arrows) in the gastrohepatic ligament with surrounding minimal free fluid. c Axial plane postcontrast MR image showed thin peripheral enhancement of this lesion with no apparent enhancement (arrows). Imaging findings were compatible with fat necrosis due to perigastric appendagitis. The patient was treated conservatively and fully recovered