Congenital diaphragmatic hernias in dogs and cats

摘要

Congenital Diaphragmatic hernias are not as common as traumatic diaphragmatic hernias. Congenital pleuroperitoneal hernia and congenital peritoneopericardial diaphragmatic hernia have been reported in puppies and kittens. Pleuroperitoneal hernias are thought to develop when there is a failure of the pleuroperitoneal membrane to fuse with the pleuroperitoneal canal during development of the diaphragm, and is proposed to be heritable by an autosomal recessive mechanism. Congenital peritoneopericardial diaphragmatic hernias are thought to be the result of a uterine accident during embryogenesis and not heritable with the typical ventral diaphragmatic defect thought to result from faulty development of the septum transversum. Peritoneopericardial diaphragmatic hernia may be associated with cranioventral abdominal defects but not always, therefore diagnosis of this abnormality at birth is often missed. If the cranioventral abdominal defect is present a congenital diaphragmatic hernia should be suspect