The symptoms of osteosarcoma, first of all, include pain. The severity of the tumor varies, and so does the accompanying pain. If the tumor significantly damages the bone, causing stimulation to the nerve endings of the periosteum, it will lead to increased pain;

Secondly, there is a lump. A lump can be felt on the limb, but this lump also comes with significant tenderness. The growth rate of this lump depends on the condition;

Third, there is limping. This limping is also due to limb pain, which causes progressive limping symptoms when walking, and prolonged limping can also lead to joint stiffness and muscle atrophy;

Fourth, there are systemic symptoms. Any patient with malignant tumors will experience weight loss, anemia, and multi-organ failure, and may even suffer from pathological fractures.