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Related Experiment Videos

Aortic dissection: atypical patterns seen at MR imaging.

K A Wolff1, C J Herold, C M Tempany

  • 1Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, MD 21205.

Radiology
|November 1, 1991
PubMed
Summary
This summary is machine-generated.

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Aortic dissection can present atypically without an intimal flap, showing only aortic wall thickening. Magnetic resonance imaging of the entire aorta helps identify these less recognized cases.

Area of Science:

  • Cardiovascular Imaging
  • Radiology
  • Vascular Surgery

Background:

  • Aortic dissection typically presents with an intimal flap, but atypical patterns exist.
  • These atypical presentations are less recognized and can lead to diagnostic challenges.

Purpose of the Study:

  • To review the experience with atypical aortic dissection patterns using magnetic resonance (MR) imaging.
  • To highlight aortic wall thickening as a potential sole indicator of dissection.

Main Methods:

  • Retrospective review of T1-weighted and gradient-echo MR images of the entire aorta.
  • Analysis of 64 patients diagnosed with aortic dissection.

Main Results:

  • Aortic wall thickening was the sole sign of thoracic dissection in 14% of patients.

Related Experiment Videos

  • This atypical sign was more frequent in acute (29%) versus chronic (7%) dissection.
  • No association was found with Marfan syndrome; some cases evolved to show a flap on follow-up.

    • Conclusions:

    • Aortic wall thickening can be the only sign of aortic dissection, particularly in acute cases.
    • Comprehensive MR imaging of the entire aorta is crucial for diagnosing atypical aortic dissections.
    • Recognition of atypical signs improves diagnostic accuracy and avoids false-negative results.