Congenital right diaphragmatic hernias through posterolateral and anterolateral defects associated with extralobar pulmonary sequestration: a case report.

Multiple diaphragmatic hernias in the unilateral diaphragm are extremely rare. The authors report a neonate with diaphragmatic hernias through two defects in the right diaphragm: a posterolateral defect without a hernia sac and an anterolateral defect with one. After excision of the anterolateral hernia sac, each defect was closed. Histology studies showed extralobar pulmonary sequestration in the removed hernia sac. The presence of sequestrated pulmonary tissue indicates the possibility of interference with the closure of the pleuroperitoneal canal and muscularization in the diaphragm, which may result in multiple defects.