Cancer is when cells in the body change and grow out of control. To help you understand what happens when you have cancer, let's look at how your body works normally. Your body is made up of tiny building blocks called cells. Normal cells grow when your body needs them, and die when your body does not need them any longer.
Cancer is made up of abnormal cells that grow even though your body doesn't need them. In most cancers, the abnormal cells grow to form a lump or mass called a tumor. If cancer cells are in the body long enough, they can grow into (invade) nearby areas. They can even spread to other parts of the body (metastasis).
Vaginal cancer starts in the cells of your vagina. The vagina is also known as the birth canal. It's the hollow, tube-like passageway between the bottom part of your uterus (cervix) and the outside of your body. It's the passageway through which fluid passes out of the body during menstrual periods.
Most vaginal cancers begin in the lining of your vagina, which is called the epithelium. These are called vaginal squamous cell carcinomas. This type of vaginal cancer develops over many years. It starts as precancerous changes, called vaginal intraepithelial neoplasia (VAIN).
These are other, very rare types of vaginal cancer:
Adenocarcinomas, which develop in the glands of your vagina
Malignant melanomas, a form of skin cancer, which affect the lower or outer portion of your vagina
Sarcomas, which develop deep in the muscular wall of your vagina
If you have questions about vaginal cancer, talk with your healthcare provider. Your healthcare provider can help you understand more about this cancer.
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