CHRIS PRIEST / SCIENCE PHOTO LIBRARY CHRIS PRIEST / SCIENCE PHOTO LIBRARY
Woman patient undergoing mammography examination, showing the positioning for a right oblique view. Mammography is an X-ray technique which reveals fine details of internal breast tissues; its main application is in the early detection of breast cancer. A radiologist, a doctor specialising in X-ray diagnosis, is able to distinguish between cancerous tumours and other benign conditions such as cysts, by their appearance on a mammogram. Small tumours detected at an early stage may sometimes be treated in a conservative manner without resort to a mastectomy, the removal of the whole breast. Photographed at King's College Hospital, London.
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