Ascending aorta dilatation

Dr Bruno Di Muzio and Assoc Prof Frank Gaillard et al.

Dilatation of the ascending aorta is a common finding in the elderly but unusual in younger patients.


In adults, an ascending aortic diameter greater than 4 cm is considered to indicate dilatation 4. Aneurysmal dilatation is considered when the ascending aortic diameter reaches or exceeds 1.5 times the expected normal diameter (equal to or greater than 5 cm). 


Causes include 1:

Article information

rID: 20248
System: Chest, Vascular
Section: Gamuts
Synonyms or Alternate Spellings:
  • Ascending aortic dilatation
  • Dilated ascending aorta
  • Dilatation of the ascending aorta

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Cases and figures

  • Figure 1: thoracic aorta
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  • Case 1: ascending aortic aneurysm
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  • Case 2: Marfan syndrome
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  • Case 3: aortic dissection
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