About
The diaphragm is the sheet of muscle that separates the chest from the abdomen. Diaphragmatic Hernia (CDH) is a hole in the diaphragm and may be from one inch to several inches across.
This results in the intestines (and sometimes the stomach) entering the chest cavity preventing lung growth. It usually occurs on the left side of the chest. The cause of this condition is unknown. This is a rare condition and occurs in about 1:2000 babies. It happens at about the third month of pregnancy.