Figure 2. An intra-aneurysmal thrombus was present in 82.3% of abdominal aortic aneurysm (AAA) patients.

(A) Example of an intra-aneurysmal thrombus affecting ≥50% of the AAA lumen (red circle), which was calculated to be 194.5 cm³ by serial computed tomography volumetry. (B) The presence of an intra-aneurysmal thrombus was associated with larger AAA diameters as assessed by the Mann-Whitney U test. Whiskers box plots show 50% of cases within the boxes and all data excluding mavericks between the end-points of the whiskers (lines). (C) AAA diameters were associated with the volume of the intra-aneurysmal thrombus ranging from 1.9 to 377.5 cm³, evaluated by the Spearman-Rho test (corr_coeff = 0.721, p<0.001). P-values <0.05 were considered as significant.