A congenital diaphragmatic hernia most commonly occurs

D. Congenital diaphragmatic hernias occur most commonly on the left posterolateral side. The pleuroperitoneal membrane on the right side closes before the left for reasons that are not clear. Consequently, the patency on the left side remains unclosed for a longer time. The portion of the diaphragm formed by the pleuroperitoneal membrane in the newborn is located posterolateral.