Large anterior diaphragmatic hernias are divided into:

• Morgagni hernia: rare (2% of all diaphragmatic hernias) congenital herniation of abdominal contents into the thoracic cavity through the retrosternal foramina of Morgagni which lie within muscular part of the diaphragm.  Morgagni hernias tend to be small, seen mainly in right hemithorax and generally diagnosed in children, however, in 5% of cases are found in adults.
• Other anterior hernias: herniation of abdominal contents into the thoracic cavity through defect in tendinous part of diaphragm 

In this case, it is uncertain if the bilateral herniation of large and small bowel into the thoracic cavity is through the Morganini foramina or through a large defect in tendinous part of the diaphragm.