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Pelvic artery aneurysm screening provides value in patients with thoracic aortic aneurysms

  • Matthew Chapman
  • Leslie E. Quint
  • Kuanwong Watcharotone
  • Bin Nan
  • Michael J. Ranella
  • Mariana R. DeFreitas
  • Joanna R. Hider
  • Jonathan L. Eliason
  • Himanshu J. Patel
Original Paper

Abstract

Approximately ¼ of patients with thoracic aortic aneurysms (TAAs) have concomitant abdominal aortic aneurysms (AAAs), thereby justifying the addition of an abdominal CT scan to a chest CT scan in patients with a newly diagnosed or suspected TAA. However, the prevalence of pelvic artery aneurysms (PAAs) in these patients is unknown. The purpose of this study was to determine the prevalence of PAAs in patients with TAAs and to assess what patient specific factors were associated with PAAs, thereby providing insight into the usefulness of pelvic imaging in TAA patients. Consecutive non-operated patients seen in Cardiac Surgery clinic between 2008 and 2013 with a TAA and a CT scan of the chest/abdomen/pelvis were included. Scans of 371 patients were evaluated for PAAs using threshold diameters of 20 and 15 mm for common iliac artery aneurysms (CIAs) and internal iliac artery aneurysms (IIAs), respectively, on 3D analysis. The prevalence of PAAs was determined and multiple logistic regression was used to identify associated risk factors. 41 of 371 (11.1%) patients with a TAA had at least one PAA. Factors showing positive associations with PAAs included increased age (p = 0.0004), male gender (p = 0.0007), descending TAA location (p = 0.0024) and presence of an AAA (p < 0.0001). The results of our study suggest that the addition of pelvic imaging for PAA screening in patients undergoing an initial CT scan of the chest and abdomen for a TAA is valuable, particularly in patients with the following demographics: age ≥65, male gender, descending TAA location, and/or known AAA.

Keywords

Aorta/aortic Thoracic aortic aneurysm Abdominal aortic aneurysm Pelvic artery aneurysm Imaging Computed tomography 3D analysis 

Notes

Funding

Matthew Chapman is supported by University of Michigan Medical School Student Biomedical Research Programs (SBRP), 5124 C Med Sci I, SPC 5611. All other authors have no financial or industry relationships involved in this work.

Compliance with ethical standards

Conflict of interest

The authors have no reported conflicts of interest.

Ethical approval

Institutional review board approval, with waiver of informed consent, was obtained for this HIPAA-compliant, retrospective study. All procedures performed were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Copyright information

© Springer Science+Business Media Dordrecht 2017

Authors and Affiliations

  • Matthew Chapman
    • 1
  • Leslie E. Quint
    • 2
  • Kuanwong Watcharotone
    • 3
  • Bin Nan
    • 3
  • Michael J. Ranella
    • 4
  • Mariana R. DeFreitas
    • 1
  • Joanna R. Hider
    • 4
  • Jonathan L. Eliason
    • 5
  • Himanshu J. Patel
    • 6
  1. 1.Medical SchoolUniversity of Michigan Health SystemAnn ArborUSA
  2. 2.Department of RadiologyUniversity of Michigan Health SystemAnn ArborUSA
  3. 3.Michigan Institute for Clinical & Health ResearchUniversity of MichiganAnn ArborUSA
  4. 4.Frankel Cardiovascular CenterUniversity of Michigan Health SystemAnn ArborUSA
  5. 5.Department of SurgeryUniversity of Michigan Health SystemAnn ArborUSA
  6. 6.Department of Cardiac SurgeryUniversity of Michigan Health SystemAnn ArborUSA

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