CENTRE JEAN PERRIN / ISM / SCIENCE PHOTO LIBRARY CENTRE JEAN PERRIN / ISM / SCIENCE PHOTO LIBRARY
Bone cancer. Coloured positron emission tomography (PET) scan of the legs of a patient with an osteosarcoma (pink) on the right femur (thigh bone). An osteosarcoma is a malignant (cancerous) tumour arising from mesenchymal cells inside bone. This is an aggressive cancer as it metastasises (spreads) quickly throughout the body. Osteosarcomas usually occur in children and adolescents whose bones are still growing. Tratment is by chemotherapy and radiotherapy, followed by surgery to remove the tumour. If the tumour is too large, the affected limb may be amputated.
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