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Incidence, follow-up and outcomes of incidental abdominal aortic aneurysms in computed tomography.

OBJECTIVES: The goal of our study was to determine the prevalence of abdominal aortic aneurysms (AAAs) that were incidentally diagnosed by computed tomography applied for different reasons and to discuss the risk factors that may cause AAA.

METHODS: A total of 5396 abdominal computed tomography examinations were performed, and the 103 incidentally detected AAAs were included in the study. Patients with and without AAA were compared in terms of age, gender, thoracic and abdominal aortic diameters and comorbid diseases.

RESULTS: The prevalence of the AAAs was 1.9%. Old age and male gender were significantly different between the groups (P < 0.001). The reason for applying computed tomography in 52 (50.5%) patients with AAA was associated with malignancy. In the evaluation of all patients in the study, the aortic diameter was determined to be larger in patients with malignancy than in patients without malignancy (18.07 ± 4.1 mm vs 17.7 ± 3.9 mm, respectively; P < 0.001). The thoracic aortic diameter was wider in patients with AAA compared to that in patients without AAA (37.2 ± 3.9 mm vs 33.9 ± 5.2 mm, respectively; P < 0.001). The presence of coronary artery disease, diabetes mellitus, hypertension and a history of smoking in patients with AAA was significantly different from that of patients without AAA (P < 0.001). There was no significant difference between the groups in terms of hyperlipidaemia and chronic obstructive pulmonary disease (P = 0.52 and P = 0.15, respectively).

CONCLUSIONS: Screening of older men with diseases such as malignancy, hypertension, diabetes mellitus and coronary artery disease for AAA is important for the early diagnosis and treatment of this disease.

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