Abstract
Three cases of hernia of the foramen Morgagni that is often refered as a rare type among diaphragmatic hernias are reported and examined from preoperaitve diagnostic aspect. The patients were all females aged 12, 73, and 77 years who were detected from abnormal shadow in the chest radiogram. The hernia involved the greater omentum alone in 2 cases and a part of right lobe of the liver in one case. Morgagni's foramen hernia of which content includes the greater omentum or liver is difficult to be diagnosed before surgery, successful preoperative diagnosing rate being as low as 20%. In the three patients, preoperative CT scanning could successfully detected Morgani's foramen hernia. The CT scan is extremely valuable as preoperative diagnostic method, however, consecutive through scanning from the lower part of the thoracic cavity to the upper part of the abdorminal cavity is important.
