BREAST SCREENING UNIT, KINGS COLLEGE HOSPITAL, LONDON / SCIENCE PHOTO LIBRARY BREAST SCREENING UNIT, KINGS COLLEGE HOSPITAL, LONDON / SCIENCE PHOTO LIBRARY
Breast cancer: mammogram of a female breast showing calcification (dense white flecks) in a cancerous tumour. The nipple is to the left. Mammography is a special X-ray technique that is used to visualize soft tissues of the breast as a means of screening women for breast cancer. The majority of breast cancers originate in the mammary ducts & the remainder in the lobular glands. Most tumours of either type show early evidence of invasive (malignant) behaviour, but ductal & lobular cancers may exist in non-invasive forms.
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