Why does my cat have growing lumps under his chin and mouth?

Question

I had taken my cat to the vet a few years ago about the big lump/lumps he hae under his chin and mouth but was just sent home saying it will drain on its own or it was nothing to worry about. No biopsy was done. I noticed much later that the lump did not drain and grew in size to what it is now plus there have been even more lumps appearing around his mouth. What is the diagnosis? Pet's info: Cat | Maine Coon | Male | neutered | 17.5 lbs

Ricardo Fernandez, DVM · Accepted Answer

Thanks for using Petco Pet Education Center, formerly Petcoach! These look like tumors of some kind. I cannot tell you what they are just based on pictures though possibilities include mast cell tumors, melanomas, among others. I recommend that you have him evaluated by your veterinarian for further assessment which includes a test called fine needle aspirate which will likely help reach a diagnosis. In some cases a biopsy is needed. Treatment will be dependent on findings. Good luck!

Why does my cat have growing lumps under his chin and mouth?

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