Secondary bone cancer prognosis, what to do?

Treat if possible: Secondary bone cancer is one of the common sites of cancer spread. What spreads to bone remains in bone possibly progressing and enlarging to periosteum to produce pain. If localized, RT given to reduce pain. If at multiple sites, chemo is offered if susceptible . This is true of breast cancer that can remain in bone and respond for up to 10 yrs. Other lesions such as lung to bone do poorly