Diaphragmatic hernia is a type of internal hernia. Congenital diaphragmatic hernia is mainly caused by incomplete closure of the diaphragm during the embryonic period, resulting in unilateral or bilateral diaphragmatic defects. Some abdominal organs enter the thoracic cavity through the defect, thus causing a disease with abnormal anatomical relationships.

Congenital diaphragmatic hernia can be divided into posterolateral diaphragmatic hernia, hiatal hernia, and congenital retrosternal hernia. Partial defects in the diaphragm during embryonic development are the basis for the onset of congenital diaphragmatic hernia.

Congenital diaphragmatic hernia can cause complications such as respiratory distress, metabolic acidosis, hypoxemia, hypercapnia, gastroesophageal reflux, intestinal obstruction, and even shock. In severe cases, it can even lead to the death of infants.

Therefore, once congenital diaphragmatic hernia is detected, symptomatic treatment should be carried out in a timely manner.