i had an aortic aneurism for years...discovered by chance when i was scanned for possible stones. I never knew i had it--it never gave me any trouble. I had it scanned every year--then in early 2016 i was told i needed an operation to fit a stent as the aneurism was starting to expand.
The op was a complete success--carried out by an American Lady surgeon at Southampton general hospital UK. I have had no after effects or problems. Ive no idea if i was given blood--i never asked.
Now--the stones are back--and i'm waiting for non-urgent surgery to remove my gall bladder.