Thank you so much for your comprehensive reply, you have given us hope! We will go back to the vet right away and see if he is willing to follow this course of action, if not, we will be looking for another vet.
Dear Dr Salkin,
We have wonderful news - Nellie does not have cancer. We returned to the vet practice and saw another vet who agreed with you and carried out the chest x-ray and a blood test which were clear and suggested we took her for a scan to save her a painful bone biopsy. The scan shows that it is not cancer but an ancient injury and she should make a full recovery, in fact she is quite well already and has stopped limping. We cannot thank you enough for your advice, you saved her life and her leg!
God bless you.
Roger and Mary (Normandy,France)