Veterinary questions? Ask a Vet for Answers ASAP
Hi, Welcome to Just Answer. I'm Chris, a small animal Vet based in the UK. I am reviewing your question and will get back to you as soon as possible
Thanks for the photo. I'm afraid to say that your vet is most likely right and that the swelling is most likely a tumour. A fracture or dislocation of the leg would not produce swelling to this degree or location.
The only other possible differential is an abscess, although I feel this is unlikely. A needle aspirate of the mass could confirm either way.
If it is indeed a tumour then it will continue to grow and when it starts to interfere with his quality of life, then euthanasia should be considered sadly.
I hope that answers your question? Please let me know if you need any further help or advice.
I think if his mobility is not impaired then euthanasia is not necessary immediately, but is likely to become so in the near future sadly
OK I can call now