A gentle approach to cancer

I have been given some terrible news, my lovely Wolfhound cross has cancer in his front leg (osteosarcoma). Due to his size, amputation is out of the question.
I am loathe to give up completely and would like any advice about how to make the time we have left as high quality as possible, for as long as possible.
What alternative things can I do to fight this cancer and keep his pain to a minimum.
At the moment he is loving his food and you just wouldn't know he was in any pain. There's no limp, nothing. I know he's ill, but most people wouldn't have a clue.
Brenda Adams, Dorset

I am so sorry to hear your news. Sometimes it is worth rethinking a condition from the dog's perspective and I do feel so sad for dogs who a treated for cancer away from home with low chances of success. I do think quality of life has to be very high on our list and we need to ask about survival rates and the quality of life post surgery/treatment before we try to fight cancer at all costs.
Having said that, Fitzpatrick Referrals in Godalming are leading the world in their field and have done some amazing limb salvage on large animals that can't cope with amputation due to their size, but I'm unsure whether this would appropriate for this case. The dog I met with a false limb was an American Bulldog who had been diagnosed with cancer in a foot and the quality and quantity of life achieved by limb replacement was fantastic, but it certainly wasn't cheap (similar cost to hip replacement surgery) - his owner wasn't able to claim for the operation via his insurer.
As for fighting the cancer gently there are more and more things available. I would direct you to our CV247 blog for lots of information about that very gentle, non invasive treatment that more and more alternative vets are offering - you can use it at home, and there are no side effects. Many people are finding success from using this in combination with other alternatives and I'm sure other people will pitch in with more information on all the other alternatives that they have had success with.
Beverley Cuddy, Editor Dogs Today