The radiographs show that the large right
paracardiac mass represents bowel that has herniated anteriorly into the chest,
presumably through a congenital diaphragmatic defect involving the Foramen of
Morgagni. A computed tomographic scan (image below) confirmed the diagnosis.
Such herniation typically occurs on the right but
can be left-sided or bilateral. Surgical repair is recommended in most cases to
prevent obstruction or strangulation of the bowel.