The mention of tumor makes people feel a bit frightened! However, there are both malignant and benign tumors, so don’t be blindly afraid and nervous, which is not good for the treatment work. Bone tumor is a tumor that occurs in the bone or its affiliated tissues, and it is a serious disease that may take away a person’s life, so we must pay enough attention to bone tumor. Early tumor is located in the bone, with the growth of tumor, the expansion of bone becomes more and more obvious. After the tumor breaks through the bone, it will form a soft tissue mass. Pain, which is the main symptom of bone tumor in early stage, is mild and intermittent at the beginning of the disease, but with the progress of the disease, the pain can gradually increase and develop into persistent. Most of the patients have pain at night, which affects their sleep. The pain can be radiated to distant places. Loss of function, the pain or mass affects the movement of the affected limb, for example, upper humerus tumor affects shoulder joint movement, crestal tumor can restrict the movement of crestal spine and cause stiffness or combined with crestal scoliosis. 4. Compression of nerves, craniofacial tumor presses on cranial nerve; tumor near the first rib compresses on brachial plexus nerve; crest tumor may cause limb paralysis. The distal end of the affected limb will have numbness due to compression of neurovascular, etc. V. Pathological fracture, the growth of tumor in bone can cause fracture by slight external force or general daily activities, and the existence of bone tumor is often found only after fracture occurs. Fever, weight loss, fatigue and reduced mobility sometimes occur in advanced bone tumors. Benign bone tumors are usually painless. The following conditions should be seen by a doctor. Pathological fracture, the tumor site is prone to fracture if there is slight external force, the fracture site is swollen and painful, the pathological fracture of crestal spine is often combined with paraplegia. Systemic symptoms, due to the consumption of tumor, stimulation of toxin and pain, a series of systemic symptoms may appear, such as insomnia, irritability, loss of appetite, depression, pallor, progressive wasting, anemia, cachexia, etc. These are the most common symptoms of bone tumor. Once similar symptoms appear, it is necessary to pay attention to them, which may be bone tumor.