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Breast cancer is a kind of cancer that begins as a growth of cells in the breast tissue. After skin cancer, breast cancer is the most common cancer diagnosed in women in the United States.
Learn about this common cancer, including information on prevention, symptoms, diagnosis and treatment.
Learn about this rare, aggressive type of breast cancer that causes a swollen breast. Treatments include surgery, radiation, chemotherapy and others.
Using a tissue sample from your breast biopsy or using your tumor if you've already undergone surgery, your medical team determines your breast cancer type. This information helps your doctor decide which treatment options are most appropriate for you.
Ductal carcinoma in situ doesn't typically cause symptoms. This early form of breast cancer also is called DCIS. DCIS can sometimes cause symptoms such as: A breast lump. Bloody nipple discharge. DCIS is usually found on a mammogram. It appears as tiny flecks of calcium in the breast tissue.
Signs and symptoms of male breast cancer can include: A painless lump or thickening of the skin on the chest. Changes to the skin covering the chest, such as dimpling, puckering, scaling or changes in the color of the skin. Changes to the nipple, such as changes in the skin color or scaling, or a nipple that begins to turn inward.
Invasive lobular carcinoma is a type of breast cancer that begins as a growth of cells in the milk-producing glands of the breast. These glands are called lobules. Invasive cancer means that the cancer cells have broken out of the lobule where they began and spread into the breast tissue.
Learn about symptoms that alert doctors to a breast cancer recurrence and strategies for treating cancer that comes back after initial treatment.
Paget's (PAJ-its) disease of the breast is a rare form of breast cancer. Paget's disease of the breast starts on the nipple and extends to the dark circle of skin (areola) around the nipple. Paget's disease of the breast isn't related to Paget's disease of the bone, a metabolic bone disease.
HER2-positive breast cancer is a breast cancer that tests positive for a protein called human epidermal growth factor receptor 2 (HER2). This protein promotes the growth of cancer cells. In about 1 of every 5 breast cancers, the cancer cells have extra copies of the gene that makes the HER2 protein.