BONE CANCER GUIDEBone Cancer OverviewSarcomaBone Cancer Risk FactorsBone Cancer DiagnosisBone Cancer TypesBone Cancer StagesBone Cancer Treatment Bone Cancer Stages Stage 1 Bone CancerCancer is limited to bone and has not spread to other areas of the body; carcinogenic cells are less aggressive Stage 2 Bone CancerCancer is limited to bone and has not spread to other areas of the body, but cancer cells are more aggressiveStage 3 Bone CancerCancer occurs in two or more sites of the same bone; carcinogenic cells may be less aggressive or more aggressiveStage 4 Bone CancerCancer has spread out of the bone, in other regions of the body, to other internal bones or organs