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breast cancer
Breast cancer is a type of uncontrolled growth of abnormal cells that develops in one of several areas of the breast, including the ducts that carry milk to the nipple, the small sacs that produce milk (lobules) and the nonglandular tissue.

Symptoms of breast cancer may include:


  • a lump or thickening in the breast or under the arm
  • a clear or bloody discharge from the nipple
  • crusting or scaling of the nipple
  • inverted nipples
  • redness or swelling of the breast
  • dimpling on the breast skin resembling the texture of an orange
  • change in the size or shape of the breast
  • a sore or ulcer on the skin of the breast that does not heal

Treatment may include:



Types include:


  • invasive ductal carcinoma - This type of breast cancer develops in the milk ducts and accounts for about 75% of cases. It can break through the duct wall and invade the fatty tissue of the breast, then spread (metastasize) to other parts of the body through the bloodstream or lymphatic system.
  • invasive lobular carcinoma - This type of breast cancer originates in the breast's milk-producing lobules. It can spread to the breast's fatty tissue and other places in the body.
  • medullary, mucinous and tubular carcinomas - These slow-growing types of breast cancer represent a small number of all breast cancers.
  • paget's disease  - This type represents about 1% of breast cancers. It starts in the milk ducts of the nipple and can spread to the dark circle around the nipple.
  • inflammatory carcinoma - Of all breast cancers, inflammatory carcinoma is the most aggressive and difficult to treat, because it spreads so quickly. It is a rare form of cancer.

As more women have regular mammograms, doctors are detecting many more noninvasive or precancerous conditions before they become full-blown cancer. These conditions include:


  • ductal carcinoma in situ (DCIS) - This occurs when cancer cells fill the ducts but haven't spread through the walls into fatty tissue.
  • lobular carcinoma in situ (LCIS) - This is less of a threat than DCIS. It develops in the breast's milk-producing lobules.
  • oncology
  • radiology
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