One of my dogs got a growth thing under his top eyelid. We got it removed (cut a little triangle out) and had it tested. It was nothing malignant and never came back. Was definitely a stress reliever to get it removed and tested. They can test to make sure it's not malignant and they got the whole thing.
One of my past Beagles had a growth that developed when he was about 8 yrs old, The 2 vets that I saw thought that it was too close to the eye and advised me to wait and see if it got larger. It never did and he passed naturally at 12+ yrs old.
Sorry for the quality but this is a scan from a film camera print as we had nothing digital at the time.