Objective: Remind the clinical and radiological features of the internal left para duodenal hernia.
Materials and method: We report the case of a left para duodenal hernia in a 30 years old woman who suffers of an acute abdominal pain explored by ultra sonography, barium upper gastro intestinal radiography, computed tomography and MRI.
Results: CT shows a well limited intra abdominal mass composed of small bowel wrapped in a bag of peritoneum, and moving to the left the mesenteric axis
Conclusion: Left internal para duodenal hernia is a rare phenomenon and is frequently non diagnosed. Spiral computed tomography allows us now, to make the diagnostic with a good sensitivity in the majority of cases.