SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY
Secondary bone cancer. Coloured PET (positron emission tomography) scan of secondary bone cancer (red dots, lower centre) in a 65-year-old man's spine. The head and the rest of the torso are also shown on this frontal PET scan. The cancer spread (metastasised) from a cancer of the prostate gland to the lumbar (lower) region of the spine. Bones are a common site for secondary cancers. Once a cancer has spread from its original site, the prognosis is poor. PET scanning uses a radioactive tracer that is injected into the body and is taken up by the tumour. The tracer decays and emits positrons, allowing the presence of the tracer to be detected.
Model release not required. Property release not required.