tumor on a young rat?

[Ratlovingkippy06]

I took in a Dumbo blue Rex baby a few months ago and he was nice and healthy till now. I guess i wasn't looking for this so maybe that is why i missed it, but things have been crazy which makes me feel worse. I pulled Remy out to say hi and he had a solid mass on his jaw that i have never saw before. I was trying to feel around it and it is a solid mass. Romeo ( older male in different group) is on baytil for an infection but this mass feel different. Rather than being a absences which i wish it was but its looking nothing like one because of how solid it is and the location. How can a rat soo young that is male have a tumor already>? any ideas.. I work at a vet office so i am going to talk to the doctor but i was just wondering what the odds were that such a young rat would have a life threating tumor this young.

[Pamnangel]

It's not real common, but young rats can get tumors.  I knew a little boy, only 4 or 5 weeks old, who had small lump on his back.