Recent studies show that survival for men with prostate cancer that has spread to the bone is just under two years. But this form of cancer, though aggressive, can sometimes be controlled. Here's what oncologists who treat prostate cancer say are the most common strategies for treating a cancer like Biden's, and some of the challenges.

When caught early, prostate cancer is highly survivable, but it is also the second-leading cause of cancer death in men. About one in eight men are diagnosed.