Aortic pseudoaneurysm versus ductus diverticulum

Differentiation of aortic pseudoaneurysm from ductus diverticulum is critical, particularly in the trauma setting. A traumatic aortic pseudoaneurysm is a surgical emergency whereas a ductus diverticulum is a normal anatomy variant.

The following are differentiating features:

Aortic pseudoaneurysm

  • location: often seen along the inferior surface of the aortic isthmus 1
  • angle with the aortic wall: acute angle
  • calcification: not present
  • other supportive findings: signs of regional traumatic injuries such as intimal flap or haematoma nearby within the aortic wall and/or mediastinum

Ductus diverticulum

  • location: usually found at the anteromedial aspect of the aortic isthmus 2
  • angle with the aortic wall: often gentle obtuse angle
  • calcification: an important differentiating point when present
Share article

Article information

rID: 62762
Section: Approach
Synonyms or Alternate Spellings:

Support Radiopaedia and see fewer ads

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.