You indicated that you are trying to learn more. You might be interested to read the information at this link: https://www.ahajournals.org/doi/10.1161/CIR.0000000000001106 and the information here: https://consultqd.clevelandclinic.org/thoracic-aortic-aneurysm-how-to-counsel-when-to-refer. These are links to information for doctors, but I have found them useful to try to educate myself before meeting with my doctor.

There’s an app you can input your relevant information in and it will let you know the recommendations from various organizations regarding surgery. It’s called “Aortic Surgery Guidelines”. It doesn’t seem to include symptoms and, as you note, that should change the “equation”.

Good luck!