25.0 MB (1.8 MB compressed)
2797 x 3126 pixels
23.6 x 26.4 cm ⏐ 9.3 x 10.4 in (300dpi)
JEAN-DENIS LAREDO / ISM / SCIENCE PHOTO LIBRARY JEAN-DENIS LAREDO / ISM / SCIENCE PHOTO LIBRARY
Bone cancer. Coloured lateral computed tomography (CT) scan of the knee of a patient with a parosteal osteosarcoma (bone cancer, green mass at centre right) on the femur (thigh bone). This is a malignant cancer arising from the periosteum, a fibrous membrane that covers the surface of all bones. Parosteal tumours are considered less dangerous and easier to manage than other bone cancers, as they are slower-growing and less invasive. Treatment is by surgical removal of the tumour. Prognosis is generally good, as this type of tumour rarely metastasises (spreads) to other parts of the body.
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