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Visceral adiposity and morphological changes of the aorta on MSCT angiography

Visceral adiposity is related to development of metabolic syndrome and cardiovascular diseases. We evaluated the relationship between the amount and distribution of abdominal adipose tissue with development of abdominal aortic aneurysm and atherosclerotic changes of the aorta. Total, visceral and subcutaneous abdominal fat areas were measured on a single axial CT scan at the level of umbilicus in 94 patients with abdominal aortic aneurysm and in 94 control subjects. We found no relationship between abdominal aortic aneurysm development and total and visceral fat areas, while subcutaneous adipose tissue had „protective“ effect on aneurysm development. In the control group, atherosclerotic plaques of aortic segments were graded, and positive relationship between visceral fat area and atherosclerotic lesions of all aortic segments was seen. There was no protective nor harmful effect of subcutaneous fat tissue on development of aortic atherosclerosis. Our results indicate that aneurysmatic dilatation of the aorta and stenosing atherosclerotic lesions could be caused by different pathophysiological mechanisms.

visceral adiposity; abdominal aortic aneurysm; atherosclerosis

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