
ostosarcoma shows up on the xrays in 95% of cases with a distinctive star burst pattern, some vets like to do biopsy of the bone, but alot of people who have had this done have regretted it, for the following reasons, the biopsy is painful, it weakens the bone further making fracture more likely, if the tumor is burst it can cause spread, and last of all is expensive and most feel the money would have been better spent towards treatment. Sadly as archies mum said, my dog had bone cancer though we were much luckier than some, we had a great oncologist, and we actually beat it but this is rare, I belong to a bone cancer dog group of which sadly again their are hundreds and hundreds of dogs with OS, following these dogs through the different treatment options has given us greater insite to what is available treatment wise etc. First thing is to get a confirmed diagnosis, if it is very likely OS ask for a referal to an oncologist, where as our daily vets are good, there see only a few cases, where the oncologists deal with nothing but cancers and are more up to date with treatment options, and have more knowledge when accessing a dog if amputation is an option. At present the gold standard of treatment (most successful) is amputation and chemo, chemo is not like chemo in humans, there is little to no side effects in most dogs, however there are different chemos available and it is wise to research these, we chose carboplatin, for us it worked wonderfully, if it does turn out to be OS click on my name and it will take you to the link to my dogs web pages and you can see what we did
Good luck hope it turns out not to be bone cancer, but if it does, don't dispair it is only the start of the journey not the end
justi