Thoracic aortic aneurysm

Discussion:

In the majority of cases a dilated thoracic aorta on a chest radiograph in an elderly patient it is due to ectasia (sometimes referred to as unfolding of the aorta).

In this case, it is true aneurysmal dilatation which was confirmed on a CT (not available).

These radiographs also illustrate the magnification differences of a PA and AP projection on the mediastinal structures.

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