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No evidence of aortic dissection.

Aneurysmal dilatation of the ascending aorta is noted from the level of the aortic sinus to the aortic arch.
Aortic diameters are as below:

• level of the aortic annulus: 5.6 cm in AP diameter.
• level of the aortic sinus: 7.2 cm in AP diameter. 
• level of the sinotubular junction: 8.8 cm in AP diameter.
• mid ascending aorta: 9.3 cm in AP diameter.
• high ascending aorta (before the arch): 4 cm.
• aortic arch: 3 cm
• descending aorta: 3.2 cm.

The rest of the mediastinal great vessels are unremarkable.