A bone tumour additionally spelled bone tumour is a neoplastic increase of tissue in bone. Abnormal growths found in the bone can be both benign (noncancerous) or malignant (cancerous). Bone tumours may be categorized as "primary tumours", which originate in bone or from bone-derived cells and tissues, and "secondary tumours" which originate in other sites and spread (metastasize) to the skeleton. Carcinomas of the prostate, breasts, lungs, thyroid, and kidneys are the carcinomas that most commonly metastasize to bone. Signs and signs of bone cancer consist of Bone pain, Swelling and tenderness near the affected area, Weakened bone, main to fracture, Fatigue, Unintended weight loss.