@bitsygirl has pretty much covered everything I would have said. Vascular surgeons are often in the same team as cardiothoracic surgeons, as bitsygirl mentioned as far as we know the only effective treatment to repair an ascending aortic aneurysm is through OH surgery and that’s normally performed by a cardiothoracic surgeon. I may be wrong but endovascular surgeons normally do catheter type surgeries, stents, angiograms, etc which would be useful if your aneurysm was abdominal. But listen to her and ask that question, how many OH ascending aortic repairs she has done.

You are far from the surgery range, so in my mind you should find a good aortic disease specialist (cardiologist) that establishes the follow up protocol and is familiar with the type of care you need to have.

Lastly don’t be worried about feeling you are asking dumb questions, there are no dumb questions especially as they relate to your health, if you have doubts just ask whatever question comes to your mind.

Take care of your body, you want to be in the best shape possible if you ever need surgery

All the best