Worlds largest dog canine tumor 23 pounds taken?

My dog just had a 23 pound, yes, taken out of his stomach. Hes 140 pound argentine dogo. Im wondering what the world record is? He is doing great, it was unbelievable. I took him to the vet to get a bleeding mole removed, the next thing I know they said he had an hour to live because he was bleeding internally. Then they told me about the tumor (said it was ten pounds), turned out it was 23 pounds and bigger than a basketball, three days out of surgery and he is holding his own. Just amazing!