Breast Cancer (cont.)
IN THIS ARTICLE
Are There Different Types of Breast Cancer?
The breasts are made of fat, glands, and connective (fibrous) tissue. The breast has several lobes, which are divided into lobules that end in the milk glands. Tiny ducts run from the many tiny glands, connect together, and end in the nipple.
Precancerous changes, called in situ changes, are common.
When cancers spread into the surrounding tissues, they are termed infiltrating cancers. Cancers spreading from the ducts into adjacent spaces are termed infiltrating ductal carcinomas. Cancers spreading from the lobules are infiltrating lobular carcinomas.
The most serious and dangerous cancers are metastatic cancers. Metastasis means that the cancer has spread from the place where it started into other tissues distant from the original tumor site. The most common place for breast cancer to metastasize is into the lymph nodes under the arm or above the collarbone on the same side as the cancer. Other common sites of breast cancer metastasis are the brain, the bones, and the liver. Cancers which have spread only into the lymph nodes under the arm may still be cured. Those which spread to more distant lymph nodes or other organs are not usually curable with available treatments today. Treatments can extend lives for years even in these cases.
Medically Reviewed by a Doctor on 8/17/2016
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