Abstract
Three cases of congenital diaphragmatic hernia were detected in necropsied 9,267 cattle. Three cases of them showed the peritoneopericardial diaphragmatic hernia and the sternal part of their diaphragmatic muscular parts was absent. The herniated organs within the pericardial cavity were the rumen, jejunum, liver, and spleen in Case 1, the jejunum and liver in Case 2, and were not decided in Case 3. These three cases had the hypoplastic lungs and various intracardiac defects. The Case 3 showed the sternal cleft, gastroschisis and intracardiac defects.