Preschooler with epigastric discomfort, especially when laying down to go to bed at night, who had a loop of bowel behind the sternum incidentally noted on a CXR

Surgical image of Morgagni hernia
Surgical image shows an anterior midline defect in the diaphragm, measuring 7 cm in width by 3 cm in depth. The transverse colon was herniated through this defect into the retrosternal space and had been reduced before this image was obtained.

The diagnosis was Morgagni hernia.