GUNILLA ELAM / SCIENCE PHOTO LIBRARY GUNILLA ELAM / SCIENCE PHOTO LIBRARY
Stages I-IV of prostate cancer. Illustrations of part of the male reproductive system in vertical section from the side, showing stages I to IV of prostate cancer. In the early stages, the cancer can be felt during a rectal examination. By the later stages, the cancer has spread to other organs (bladder and rectum). Prostate cancer is most prevalent in men over 50 years of age. Treatment is with hormone therapy, chemotherapy, or surgical removal of the prostate. If the cancer can be treated early, the prognosis is better than if it has started to spread. For a series of images showing the stages of prostate cancer, see C038/6170 to C038/6174.
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