Left paraduodenal hernia is an entrapment of the small bowel into the Landzert fossa, an unusual congenital peritoneal defect behind the descending mesocolon that results from failure of part of the descending mesocolon to fuse with the posterior parietal peritoneum (Doishita et al. in Radiographics, 36(1): 88-106, 2016). This fossa is reported to be present in approximately 2% of autopsy bodies. The authors present a case of a left paraduodenal hernia in a young woman.
Keywords: Fossa of Landzert; Inferior mesenteric vein; Left paraduodenal hernia.