Related Experiment Video
Updated: Sep 11, 2025

Author Spotlight: Using Point-of-Care Ultrasound for Comprehensive Evaluation of the Abdominal Aorta
Published on: September 8, 2023
Prevalence of Isolated Iliac Aneurysm in Patients with Acute Aortic Dissection
Xinyang Li1, Chong Liu2, Chuanjiang Wang3
1Department of General and Vascular Surgery, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China; Department of Vascular Surgery, the First Affiliated Hospital, China Medical University, Shenyang, Liaoning, China.
Background:
The relationship between isolated iliac aneurysms (IIAs) and acute aortic dissection (AAD) is uncertain. We aimed to determine the prevalence of IIAs in patients with AAD and evaluate the independent risk factors for the presence of IIAs in them.
Methods:
Seven patients were confirmed to have AAD with IIAs (AAD + IIA group) who had undergone computed tomography angiography (CTA). The control group comprised 597 patients were confirmed with AAD without IIAs (AAD group). Demographic data or baseline characteristics of patients included in this study were completely obtained. Two readers reviewed all CTA scans independently to assess the data of the IIAs. Baseline characteristics were compared between the aortic dissection group and the control group using propensity score matching, and logistic regression analysis was performed to determine the independent risk factors for the presence of IIAs.
Results:
The average age was 67.57 ± 10.13 years in the AAD + IIA group and 52.09 ± 12.06 years in the AAD group (P = 0.002). The proportion of smokers was respectively 39.6% and 85.7% in the AAD group and AAD + IIA group (P = 0.037). In the control group, no difference in age was observed between the dissections from the aorta to the iliac artery (n = 251 [42%]; 51.08 ± 11.35 years) and those limited to the aortic region (n = 346 [58%]; 52.82 ± 12.51 years) (P = 0.055). Multivariate analysis revealed age as an independent risk factor for the presence of IIAs (odds ratio, 1.144; 95% confidence interval, 1.059-1.235; P = 0.001). Similarly, smoking was an independent risk factor for the presence of IIAs (odds ratio, 14.601; 95% confidence interval, 1.652-129.073; P = 0.016).
Conclusion:
The prevalence of IIA in AAD was 1.2%. Age and smoking can increase the prevalence of IIAs in patients with AAD. Our results can represent a valid aid in selecting patients to be screened, which would improve the treatment outcome. Further prospective studies are warranted to demonstrate the substantial prevalence of IIAs in the AAD population.
Related Concept Videos
Aneurysm III: Interprofessional Care
Aneurysm II: Clinical Manifestations and Diagnostic Studies
Aneurysm I: Introduction
Aortic Regurgitation I: Introduction
Aneurysm IV: Nursing Management
Aortic Regurgitation II: Clinical Features and Diagnostic Tests

