General Information About Cancer
Cancer is a disease in which some of the body’s cells grow uncontrollably and spread to other parts of the body. Cancer can start almost anywhere in the human body, which is made up of trillions of cells. Normally, human cells grow and multiply (through a process called cell division) to form new cells as the body needs them. When cells grow old or become damaged, they die, and new cells take their place.
How is the stage of cancer determined?
Your healthcare provider will perform tests to determine the extent and severity of your cancer. A number will then be assigned to your diagnosis. The higher the number, the more cancer has spread.
What are the four stages of cancer?
Most cancers have four stages. The specific stage is determined by a few different factors, including the size and location of the tumor:
Stage I: Cancer is localized to a small area and hasn’t spread to lymph nodes or other tissues.
Stage II: Cancer has grown, but it hasn’t spread.
Stage III: Cancer has grown larger and has possibly spread to lymph nodes or other tissues.
Stage IV: Cancer has spread to other organs or areas of your body. This stage is also referred to as metastatic or advanced cancer.
Though stages I through IV are the most common, there is also stage zero. This earliest phase describes cancer that is still localized to the area in which it started. Cancers that are still in stage zero are usually easily treatable and are considered pre-cancerous by most healthcare providers.
Types of Cancer, Symptoms, Risks & Prevention
Breast cancer is cancer that forms in the cells of the breasts. After skin cancer, breast cancer is the most common cancer diagnosed in women in the United States. Breast cancer can occur in both men and women, but it’s far more common in women.
Lung cancer is a type of cancer that begins in the lungs. Your lungs are two spongy organs in your chest that take in oxygen when you inhale and release carbon dioxide when you exhale.Lung cancer is the leading cause of cancer deaths worldwide.