Very sorry to see this. Recently went through with the whole osteo treatment (but not amputation) at Western with Hailey, our lab cross. We got a 9 month life extension for about $24,000, of which insurance paid $5000. Not sure I would do it again. I have a few other comments if you are interested, but let's PM. An xray of the lungs is a good place to start, to check whether the cancer has established itself somewhere else.