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Mural thrombus and the progression of abdominal aortic aneurysms: a large population-based prospective cohort study

C Behr-Rasmussen1, N Grøndal1, M B Bramsen1

  • 1Vascular Research Unit, Department of Vascular Surgery, Viborg Hospital, Heibergs Alle 4, 8800 Viborg, Denmark.

European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery
|June 28, 2014
PubMed

Insights

The size of intraluminal thrombus (ILT) within abdominal aortic aneurysms (AAAs) correlates with AAA expansion. Larger ILT is linked to faster AAA growth, suggesting a role in aneurysm progression.

Area of Science:

  • Vascular Surgery
  • Aortic Disease Research
  • Medical Imaging Analysis

Background:

  • Abdominal aortic aneurysms (AAAs) are a significant cause of mortality.
  • The role of intraluminal thrombus (ILT) in AAA progression remains incompletely understood.
  • Accurate assessment of AAA growth factors is crucial for clinical management.

Purpose of the Study:

  • To determine the association between the relative size of intraluminal thrombus (ILT) and the growth rate of abdominal aortic aneurysms (AAAs).

Main Methods:

  • Observational study utilizing data from a randomized population-based screening trial.
  • Semiautomatic ultrasound method to estimate the relative cross-sectional area of ILT within AAAs.
  • Analysis included 416 patients with diagnosed AAAs aged 65-74 years.

Main Results:

  • A positive correlation was observed between relative ILT size and AAA growth rate.
  • ILT presence increased from 42% in smaller AAAs (30-34 mm) to 100% in larger AAAs (>64 mm).
  • Relative ILT size was a significant independent predictor of AAA growth after multivariate regression analysis.

Conclusions:

  • The relative size of intraluminal thrombus (ILT) is significantly associated with abdominal aortic aneurysm (AAA) growth.
  • Findings suggest that ILT may be a contributing factor in AAA progression.
  • Further research into the mechanisms of ILT's role in AAA pathogenesis is warranted.
Abstract

Keywords:
Abdominal aortic aneurysmsIntraluminal thrombusUltrasonographic scan

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