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Related Experiment Videos

["Pseudo-dissection" in an abdominal aortic aneurysm].

W Dock1, F Grabenwöger, V Metz

  • 1Röntgenabteilung der 2. Chirurgischen Universitätsklinik, Allgemeines Krankenhaus, Wien.

Aktuelle Radiologie
|September 1, 1992
PubMed
Summary

A hypoechoic crescent in abdominal aortic aneurysms can mimic dissection but is often a seroma within the thrombus. This finding, detected via duplex sonography, does not necessitate immediate surgical intervention.

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Area of Science:

  • Vascular Surgery
  • Diagnostic Imaging
  • Radiology

Background:

  • Abdominal aortic aneurysms (AAAs) are common vascular conditions.
  • Accurate diagnosis of AAA complications is crucial for patient management.
  • Aortic dissection is a critical condition requiring urgent intervention.

Purpose of the Study:

  • To describe a sonographic finding in abdominal aortic aneurysms.
  • To differentiate a specific sonographic finding from aortic dissection.
  • To guide clinical decision-making in managing abdominal aortic aneurysms.

Main Methods:

  • Sonography was performed on 52 patients with abdominal aortic aneurysms.
  • Duplex sonography was used to assess blood flow in specific zones.
  • Intraoperative aspiration was performed in select cases to confirm fluid content.

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Main Results:

  • A hypoechoic crescent-like zone was identified between the parietal thrombus and aortic wall in 7 out of 52 patients.
  • Duplex sonography showed no detectable blood flow within this crescent zone.
  • Aspiration confirmed the presence of serous fluid, suggesting a seroma within the parietal thrombus.

Conclusions:

  • The identified hypoechoic crescent in AAAs can mimic aortic dissection.
  • This finding is likely a seroma within the parietal thrombus and is not indicative of dissection.
  • This sonographic observation is relatively common and should not prompt immediate surgery.