26.9 MB (1.0 MB compressed)
2653 x 3546 pixels
22.4 x 30.0 cm ⏐ 8.8 x 11.8 in (300dpi)
ISM / SCIENCE PHOTO LIBRARY ISM / SCIENCE PHOTO LIBRARY
Secondary cancer. Coloured composite computed tomography (CT) and positron emission tomography (PET) scans of a patient with metastatic tumours (red) in the liver, lungs, intestines and ganglion cells of the nervous system. A radioactive tracer, injected into the patietn's bloodstream, has been taken up by the tumours. A metastatic cancer is a secondary cancer that has spread (metastasised) from the site of the original cancer, which in this case was thyroid cancer. Once a cancer has spread the prognosis is poor.
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