congenutal diapharagmatic hemia It is a heriation of abdominal contents into the pleural cavity through a large gap/ defect present in posterolateral part of diagragm most commonly on the left sideThis defect (also called foramen of Bochdalek) occirs due to defective development of pleuroperitineal membrane or dailure of fussion of pleuroperitoneal membrane wit other elements of the diaphragmwhen the abdominal contents like intestines, stomach, and/or spleen herniate in the thorax, they compress the developing lungs and cause their hypoplasiaThe diaphragmatic hernia is more common on the left sude probably because right pleuroperitoneal canal closes earlier than the left one.
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