Oesophageal hiatus

The oesophageal hiatus is the opening in the diaphragm through which the oesophagus passes from the thoracic to abdominal cavity. It is one of three apertures in the diaphragm and is located in the right crus.

It is situated in the muscular part of the diaphragm at the level of T10 and is elliptical in shape. It is located above, in front and a little to the left of the aortic hiatus, slightly to the left of midline. The vena caval foramen is located to it's right (right of midline) and marginally anterior to it.

It transmits several structures including the oesophagus:

The vertebral levels of the 3 main diaphragmatic apertures can be remembered by this mnemonic.


Thoracic anatomy
Share Article

Article Information

rID: 5762
Section: Anatomy
Synonyms or Alternate Spellings:
  • Esophageal hiatus

Support Radiopaedia and see fewer ads

  • Drag
    Figure 1 : diaphragm (undersurface)
    Drag here to reorder.
  • Updating… Please wait.
    Loadinganimation

    Alert accept

    Error Unable to process the form. Check for errors and try again.

    Alert accept Thank you for updating your details.