[Bochdalek's diaphragmatic hernia]

Bochdalek's diaphragmatic hernia (hernia through trigonum lumbocostale of diaphragm) may be demonstrated unequivocally via computerised tomography. An additional scan in prone position is recommended. In this way, not only the relationship of the hernia to the diaphragm can be shown but also the diaphragmatic gap (trigonum lumbocostale). In some cases sagittal image reconstruction is helpful to identify the hernia.