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Bone metastasis — also called secondary bone cancer — occurs when cancer cells spread from their original site to the bones. Rather than starting in the bone, metastatic tumors travel through the bloodstream or lymphatic system from primary cancers such as breast, prostate, lung, kidney, or thyroid cancer. It is one of the most common sites of cancer spread and can significantly impact quality of life if not detected and managed early.

This blog explains what bone metastasis is, why it occurs, key warning signs, diagnosis methods, and current treatment approaches that help patients manage pain and maintain mobility.