Features of infective native aortic aneurysms on computed tomography.
Warissara Jutidamrongphan1, Boonprasit Kritpracha2, Karl Sörelius3
1Department of Radiology, Faculty of Medicine, Prince of Songkla University, 15 Karnjanavanich Rd., Hat Yai, Songkhla, 90110, Thailand.
Insights Into Imaging
|January 9, 2022
Summary
Infective native aortic aneurysms (INAA) often present as saccular, multilobulated lesions with calcified plaques on CT scans. Key findings include periaortic inflammation and potential, though infrequent, complications involving surrounding structures.
Area of Science:
- Radiology
- Vascular Surgery
- Infectious Diseases
Background:
- Infective native aortic aneurysm (INAA) is a rare condition.
- Accurate CT imaging is crucial for diagnosis and management.
Purpose of the Study:
- To detail the computed tomography (CT) findings associated with INAAs.
- To characterize the imaging features of INAAs and their complications.
Main Methods:
- Retrospective single-center study of INAA patients (2005-2020).
- Review of CT images using a standardized protocol focusing on aneurysm and periaortic features.
- Analysis of surrounding structure involvement and complications.
Main Results:
- 114 patients with 132 INAAs analyzed; common locations: infrarenal, aortoiliac, juxtarenal.
- Typical CT findings: saccular, multilobulated aneurysms with calcified plaques; signs of instability (rupture).
- Frequent periaortic inflammation (enhancement, fat stranding, mass) and less common surrounding involvement (psoas, spondylitis) and complications (fistulas).
Conclusions:
- Saccular shape, multilobulation, and calcified plaques are characteristic CT findings of INAA.
- Periaortic inflammation is a common associated finding.
- While infrequent, complications like fistulas to adjacent organs can occur.
Keywords:
Aortic aneurysmComputed tomographyInfected aortic aneurysmInfective native aortic aneurysmMycotic aortic aneurysmMore Related Videos
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