Stage
Staging is the process of determining how much cancer there is in the body and where it is located. The underlying purpose of staging is to describe the extent or severity of an individual's cancer, and to bring together cancers that have similar prognosis and treatment. Staging of breast cancer is one aspect of breast cancer classification that assists in making appropriate treatment choices, when considered along with other classification aspects such as estrogen receptor and progesterone receptor levels in the cancer tissue, the human epidermal growth factor receptor 2 (HER2/neu) status, menopausal status, and the person's general health.
Staging information that is obtained prior to surgery, for example by mammography, x-rays and CT scans, is called clinical staging and staging by surgery is known as pathological staging.
Pathologic staging is more accurate than clinical staging, but clinical staging is the first and sometimes the only staging type. For example, if clinical staging reveals stage IV disease, extensive surgery may not be not helpful, and (appropriately) incomplete pathological staging information will be obtained.
Read more about this topic: Breast Cancer Classification
Famous quotes containing the word stage:
“Remember that as a teenager you are at the last stage in your life when you will be happy to hear that the phone is for you.”
—Fran Lebowitz (b. 1951)
“The stage is about to be swept of corpses.
You have no more chance than an infusorian
Lodged in a hollow molar of an eohippus.”
—Allen Tate (1899–1979)
“The post-office appeared a singularly domestic institution here. Ever and anon the stage stopped before some low shop or dwelling, and a wheelwright or shoemaker appeared in his shirt- sleeves and leather apron, with spectacles newly donned, holding up Uncle Sam’s bag, as if it were a slice of home-made cake, for the travelers, while he retailed some piece of gossip to the driver, really as indifferent to the presence of the former as if they were so much baggage.”
—Henry David Thoreau (1817–1862)