Infant with heterotaxy syndrome and complex congenital heart disease and bilious vomiting Pediatric Imaging Cardiovascular April 6, 2021February 28, 2021 AP image from an upper GI shows the ligament of Treitz to be in the right upper quadrant. There is no evidence of duodenal obstruction. The proximal jejunum is also in the right upper quadrant. There is also gastroesophageal reflux. The diagnosis was malrotation without midgut volvulus in a patient with heterotaxy syndrome. Related Published April 6, 2021February 28, 2021