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Modelling the growth of popliteal artery aneurysms

H Shiwani1,2, P Baxter3, E Taylor1

  • 1Department of Radiology, Leeds General Infirmary, Leeds, UK.

The British Journal of Surgery
|August 24, 2018
PubMed

Insights

Popliteal artery aneurysms (PAAs) grow approximately 2.4 mm annually. Patients with abdominal aortic aneurysms (AAAs) experience faster PAA growth, highlighting the importance of monitoring co-existing conditions.

Area of Science:

  • Vascular Surgery
  • Medical Imaging
  • Biostatistics

Background:

  • Popliteal artery aneurysms (PAAs) are the most common peripheral aneurysms, yet longitudinal progression data are scarce.
  • Understanding PAA growth is crucial for clinical management and predicting outcomes.

Purpose of the Study:

  • To track the longitudinal growth of asymptomatic PAAs.
  • To compare different models for predicting aneurysm expansion.
  • To investigate the influence of abdominal aortic aneurysms (AAAs) on PAA progression.

Main Methods:

  • Retrospective single-center cohort study.
  • Inclusion of patients with PAAs identified via lower limb arterial duplex ultrasound (2011-2016).
  • Linear multilevel modeling to analyze PAA size progression and correlate with AAA presence.

Main Results:

  • Analyzed 282 images from 47 limbs with PAAs in 32 patients.
  • Estimated average PAA growth rate of 2.4 mm/year.
  • Significantly faster PAA growth (3.5 mm/year) observed in patients with existing AAAs compared to those without (0.8 mm/year).

Conclusions:

  • Multilevel modeling effectively predicts heterogeneous PAA growth rates.
  • Concurrent abdominal aortic aneurysms are associated with accelerated popliteal artery aneurysm progression.
  • This finding underscores the need for vigilant monitoring of PAAs in patients with AAAs.
Abstract

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