A 29-year-old man was admitted to our hospital with a history of recurrent
right upper quadrant abdominal pain and vomiting. These symptoms appeared i
ntermittently for 7 years. Various examinations revealed a diagnosis of mid
gut malrotation, Laparotomy was performed and revealed reverse rotation of
the duodenum with paraduodenal hernia and a normal rotating colon. This cas
e suggests that recurrent abdominal complaints in an adult should arouse su
spicion of midgut malrotation.