Congenital Diaphragmatic Hernia

  • Etiology: defect at foramen of Bochdalek which is posterolateral in location in diaphragm, can involve herniation of intestine, liver, spleen, and kidney causing pulmonary hypoplasia bilaterally
  • CXR: multiple fairly uniform cystic structures in the hemithorax causing mediastinal shift, OK to still have pneumothorax on immediate post-op CXR because hypoplastic lung bud cannot reexpand to fill pleural space immediately and the pleural space will fill with fluid over time and should never be drained with a chest tube
  • Clinical: usually found at birth, left sided 90% of the time because liver not blocking

Cases of Congenital Diaphragmatic Hernia

CXR of congenital diaphragmatic hernia
AP and lateral CXR shows multiple fairly uniform cystic structures in the left hemithorax causing mediastinal shift to the right. The stomach is in the abdomen.
CXR after congenital diaphragmatic hernia repair showing no need for a chest tube
CXR AP (above) taken immediately postop shows that the hypoplastic left lung cannot expand to completely fill the pleural space particularly in the basilar region and subsequently there is a moderate amount of air in the pleural space. This should not be called a pneumothorax. CXR AP taken 1 day later (below) shows the left pleural space now filling with fluid.
Pathologic image of congenital diaphragmatic hernia
Pathological image of the lungs shows the markedly hypoplastic left lung. Functionally and histologically the right lung was also hypoplastic.