Retrocrural space

The retrocrural space is located posterior to the right and left crura of the diaphragm and is a direct continuation of the mediastinum. It allows the passage of a number of structures from the chest to the retroperitoneum, including:

• arteries
  • aorta
• veins
  • azygos vein
  • hemiazygos vein
• lymphatics
  • cisterna chyli is located just to the right of the aorta
  • thoracic duct
• nerves
  • sympathetic trunk
• fat