When Mac had surgery for his bowel obstruction, the vet said I could go back to visit him when he started to wake up. I barely said "hello" to him when he decided to yank out his IV and try to escape the cage. He's not the sharpest tool sometimes, LOL.
I didn't visit him for the next two days and he caused no trouble during that time. I guess I was a bad influence on him!
Glad to hear the vet thinks he got all of the lump -- sending prayers your way!
Never make someone a priority in your life when that someone treats you like an option.