Anterior view of the abdomen comparing the normal abdominal anatomy and a patient's abdomen with a hiatal hernia. The normal abdomen anatomy includes the hiatus, esophagus, diaphragm, spleen, duodenum, pancreas, colon, and the stomach. The pre-operative condition shows an abdomen with 3/4th of the stomach herniated up through the hiatus and a corresponding impingement of the left lung.