Sarcoma

Malignant tumors derived from mesenchymal tissue (including connective tissue and muscle) are called "sarcomas". Occurred in the skin, subcutaneous, periosteum and long bones at both ends. Such as fibrosarcoma grows rapidly, often in the late stage of the tumor are necrosis, bleeding, cut red-gray, uniform and fine quality like raw fish. Osteosarcoma is more common in young people, and occurs at both ends of the long bones of the extremities, especially at the lower end of the femur, the upper end of the tibia, and the upper end of the humerus. Osteosarcoma develops rapidly and has a short course. It begins to grow in the cortex and can gradually develop into the bone marrow cavity. Sometimes it breaks out of the periosteum and invades the surrounding soft tissues, which easily causes pathological fractures. Common also include leiomyoma, lymphosarcoma, and synovial sarcoma. Hematogenous metastases can occur early. Sarcoma is a malignant tumor.

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