Hi,
your heart valves are just fine, your LVEd/LVESd seems fine too.
221 for total cholesterol is indeed borderline high.
You aorta diameter is however not good. This is, if measured correctly, indeed severely dilated.
The report does not say where the dilation is located, but even if it is at the ascending part of the aorta, normal range there is 22-36mm.
You need to have this further investigated soon as you might be at risk of aortic dissection.