Andy,
Welcome. I too have a 1.6cm aneurysm and dissection of the celiac artery, I just had open repair of my SMA to fix the aneurysm and dissection. It was a 10.5 hour surgery last December(2022). I had/have a great vascular surgeon from Mayo in Rochester MN. The biggest thing I can tell you is to be YOUR biggest advocate. No one knows your body better than you! Had I not pushed and found the surgeon I did, and with Gods help, I would not be here today!! Stand up for yourself and your body and keep looking until you find the Doctor and Team that have your best interest in mind. They have been watching my Celiac aneurysm for several years with not much change. I wish you the best and know that you will get to the bottom of everything.

Dan