Aortic dissection

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[edit] Discussion

  • Aortic dissection is a tear in the wall of the aorta

[edit] Classification systems

Percentage 60 % 10-15 % 25-30 %
Type DeBakey I DeBakey II DeBakey III
Stanford A Stanford B
  Proximal Distal
Classification of aortic dissection

Stanford classification

  • Type A: Involves the ascending aorta (DeBakey types I and II)
  • Type B: Does not involve the ascending aorta (DeBakey type III)

DeBakey classification

  • Type I : Involves the ascending aorta, aortic arch, and descending aorta.
  • Type II : Confined to the ascending aorta.
  • Type III : Confined to the descending aorta distal to the left subclavian artery.

[edit] Treatment

  • Stanford type A and DeBakey types I and II are treated surgically.
  • Stanford type B and DeBakey type III are treated medically.

[edit] Imaging Findings

[edit] Differentiating true lumen from false lumen

  • Beak sign: In the false lumen, there will be an acute angle between the dissection flap and the arterial wall.
  • Aortic cobwebs: In the false lumen, there may be fibroelastic bands.
  • Size: False lumen is usually larger than the true lumen.
  • Diplaced intimal calcification: Usually faces the true lumen.

[edit] Images

Patient #1: Contrast enhanced CT demonstrates a Type B aortic dissection

Patient #2: Contrast enhanced CT demonstrates a Type A aortic dissection

[edit] See Also

[edit] External Links

[edit] References

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