The advantages of the upper gastrointestinal study for the diagnosis of midgut malrotation would be summerized as follows: (i) The upper gastrointestinal study is the most reliable method for demonstrating midgut malrotation with or without volvulus. (2) Once we establish the basal points of a normal duodenal loop, it is easy to make a diagnosis. (3) To evaluate the duodenal loop, it is necessary to perform roentgenograms in the supine position.
