The duodenorenal ligament is a fold of peritoneum that occasionally crosses from the duodenum at the termination of the hepatoduodenal ligament to the right kidney.[1] The duodenorenal ligament is an anatomic variation of the peritoneum, and is not commonly present.
It is one of many factors that may hold the kidney in place when standing.[2] It was believed, at least in the 1920s, that tension in this ligament might explain how renal diseases can cause gastrointestinal symptoms.[3]