Congenital diaphragmatic hernia: the perinatalogist's perspective.

1. Describe the incidence of congenital diaphragmatic hernia (CDH). 2. Delineate what percent of all CDHs occur on the left hemithorax and what percent are associated with the presence of other malformations. 3. Describe the mortality rate for prenatally diagnosed CDH and what factors affect the presence of associated malformations and chromosomal defects and are the major determinants of mortality. 4. Describe optimal prenatal counseling for a woman carrying a fetus who has CDH.