As a cancer survivor, I wish him the best of luck. Relapse is always a horrible thing, let alone the discovery of a bone cancer. Not only can the tumor kill you, but the treatment itself can be deadly and greatly reduce a patient's quality of life. To put things lightly, he's in an extremely tough spot with the cancer recurring and spreading, and many people would lose their lives in a situation like this. But, cancer is beatable and hopefully he'll keep a positive mindset and is surrounded by supportive friends and family.