Intraabdominal counter clockwise gastric volvulus incarcerated through a defect of the lesser omentum: CT diagnosis.

We report the probably first case of incarcerated intra-abdominal gastric volvulus protruding through a defect of the pars flaccida of the lesser omentum. The 79-year-old woman presented with acute symptoms of upper gastrointestinal occlusion. Plain film radiographs, endoscopy and attempts at opacifying the upper alimentary tract failed to make the correct diagnosis. The definite preoperative diagnosis was achieved by mdCT thanks to high quality multiplanar reconstruction (MPR). In the reported case coronal oblique MPR views and vascular volume rendering views (VR) were of particular interest for the preoperative diagnosis.