Breast cancer is a type of cancer that forms in the cells of the breast. The cells in the breast can become abnormal and divide uncontrollably, forming a lump or mass of tissue. These abnormal cells can invade nearby tissues or spread to other parts of the body through the lymphatic system or bloodstream.

Breast cancer is most commonly found in women, but it can also occur in men. There are several types of breast cancer, and the most common types are invasive ductal carcinoma and invasive lobular carcinoma.

Breast cancer signs and symptoms may include:

  • An unusual breast bulge or thickening
  • Breast size, shape, or appearance changes
  • Changes in breast skin, such as dimpling
  • Nipple inversion
  • Skin peeling, scaling, crusting, or flaking around the nipple (areola) or breast skin
  • Redness or pitting of the skin around your breast, similar to the skin of an orange

Breast cancer can be detected through routine screening, such as mammography and breast ultrasonography.

Treatment options for breast cancer may include surgery, radiation therapy, chemotherapy, targeted therapy, hormone therapy, or a combination of these approaches. The choice of treatment will depend on the type and stage of the cancer, as well as the patient's overall health and preferences.