Infant with vomiting

Upper GI of pediatric mesenteroaxial gastric volvulus
Lateral image from an upper GI exam (left) shows a fixed indentation on the posterior aspect of the mid-esophagus. AP images from the upper GI exam (right) show the stomach appears to be upside-down with the antrum and pylorus superior to the fundus and proximal body of the stomach. Note how the pylorus of the stomach is located superiorly to the gastroesophageal junction.

The diagnosis was mesenteroaxial gastric volvulus in a patient with a left aortic arch and aberrant right subclavian artery.