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CT appearance of mycotic abdominal aortic aneurysms
R H Blair1, M D Resnik, J P Polga
1Department of Radiology, Baystate Medical Center, Springfield, MA 01199.
Abstract:
The CT appearance of three cases of infected aortic aneurysms is reported with clinical and pathological correlation. Two of our cases had unique features: the disappearance of aortic calcifications, and an irregular, thickened aortic wall with peripheral enhancement. The nonspecific clinical presentation and high mortality make mycotic aneurysm an important consideration in the differential diagnosis of abnormal soft tissue contiguous with the aorta.
Insights
Infected aortic aneurysms, or mycotic aneurysms, present unique CT findings like lost calcifications and thickened aortic walls. Early diagnosis is crucial due to high mortality.
Area of Science:
- Radiology
- Cardiovascular Surgery
- Infectious Diseases
Background:
- Infected aortic aneurysms, also known as mycotic aneurysms, are rare but life-threatening conditions.
- Accurate diagnosis is challenging due to nonspecific clinical symptoms.
Observation:
- This report details the computed tomography (CT) appearance of three confirmed cases of infected aortic aneurysms.
- Two cases exhibited unique CT features: resolution of aortic calcifications and an irregular, thickened aortic wall with peripheral enhancement.
Findings:
- The observed CT findings, particularly the loss of calcification and altered aortic wall morphology, can be indicative of mycotic aneurysms.
- Pathological correlation confirmed the presence of infection within the aneurysms.
Implications:
- Mycotic aneurysms should be strongly considered in the differential diagnosis of soft tissue abnormalities adjacent to the aorta.
- Prompt recognition and treatment are essential to improve patient outcomes and reduce the high mortality associated with these infections.