Breast Cancer - College Women in the Know Two of these women are likely to get breast cancer.
Breast cancer is a specific cancer that occurs in one in eight women.
It is a cancer of the cells that starts in the breasts but may metastasize to other parts of the body through the lymph nodes. Normal lumps that occur in the breast are a combination of milk glands, fat and fibrous tissue. A normal woman who is twenty years old has breasts composed of mostly milk glands. Female Breast Anatomy. Lymph nodes are located under the armpits.