Saccular thoracic aneurysm on x-ray and aortography

A chest x-ray (A) shows a saccular aneurysm of the ascending aorta (arrow). Image B is an angiogram in left anterior oblique projection and shows a focal saccular aneurysm of the ascending aorta (arrow). Image C is a chest x-ray in the anteroposterior projection and shows a focal soft tissue density above the aortic knob (arrow). Image D is a CT scan through the aortic arch and shows a focal saccular aneurysm arising from the arch (arrow).