Closed loop bowel obstruction secondary to left paraduodenal hernia (of Landzert).

A 34-year-old man presented with acute severe left-sided abdominal and flank pain with associated postprandial nausea and vomiting. CT imaging revealed findings suspicious for a closed loop small bowel obstruction. Intraoperative findings were that of a left paraduodenal hernia (of Landzert) secondary to a mesenteric defect immediately posterior to the ascending branch of the left colic artery.