One of my sweet furbabies may have a mast cell tumor in his abdomen. The vet said it was good I brought him in as soon as I felt a lump, but I'm still worried. Anyone have any experience with this? The vet did an aspiration and sent it to a lab. He is not 100% sure it is cancer. He said there is a 30% chance it's a fatty cell and said the cells were very unusal...he couldn't tell what it was. This particular dog is my baby and so sweet, but he has always had allergies and has been sickly, unlike Chloe who never gets sick and is always bouncing around. Wish she could give him a few good vibes of health... Any experience appreciated. Vet thinks we got it early.