Yeah similar to me, noticed one day his leg was swollen and thought a sprain….nope cancer. They said we could amputate his leg, but same as you it could not guarantee it would even help as usually when there are already signs (swelling/tumor) it has already got into their lungs as this is where this cancer tends to go….then chemo. I’ve got a bunch of opinions too and most are saying to just let him live out his days as he is because a few people did the surgery and some didn’t make it through surgery and some felt it made the dog more miserable. Again weighing option and 10 years is really good for a bulldog. I know if it were me I’d rather just go than spend months miserable and in pain…….