A 63-year-old man comes to the emergency department with back pain, weakness, and shortness of breath. On examination, he has an aneurysm of the abdominal aorta at the aortic hiatus of the diaphragm. Which of the following pairs of structures would most likely be compressed?
Vagus nerve and azygos vein
Esophagus and vagus nerve
Azygos vein and thoracic duct
Thoracic duct and vagus nerve
- The aortic hiatus is a hole in the diaphragm. It is the lowest and most posterior of the large apertures.
- It is located approximately at the level of the twelfth thoracic vertebra (T12).
Structure passing through
- Through it passes the aorta and the thoracic duct
- The azygos vein and hemi-azygos vein passes through the medial lumbar gap crus of diaphragm.