The vet sent the mass to the lab, because it didn't look like fatty tissue. The results are in, and it was a benign tumor which resulted from an allergic reaction to a vaccine. Because he was vaccinated at a shelter before being adopted, we don't know which vaccine caused such reaction. The vet thinks that in the future, a titer test can be administered to avoid vaccinations.
Thank you so much for all the wonderful warm thoughts/prayers/vibes/virtual hugs everybody sent. Our next trip was put on hold, but now that he's healing, we're headed to Long Beach, CA at the end of July!
