To plan your treatment, your health care professional needs to know the stage of the disease. The following stages are used for cervical cancer:

  • Stage 0 or carcinoma in situ. This is very early cancer. The abnormal cells are found only in the first layer of cells of the lining of the cervix and do not invade the deeper tissues of the cervix.

  • Stage I cancer involves the cervix but has not spread.

  • Stage IA indicates a very small amount of cancer that is only visible under a microscope and is found in the deeper tissues of the cervix.

  • Stage IB indicates a larger amount of cancer is found in the tissues of the cervix that can usually be seen without a microscope.

  • Stage II cancer has spread to nearby areas but is still inside the pelvic area.

  • Stage IIA cancer has spread beyond the cervix to the upper two-thirds of the vagina.

  • Stage IIB cancer has spread to the tissue around the cervix, called the parametrial tissue.

  • Stage III cancer has spread throughout the pelvic area. Cancer cells may have spread to the lower part of the vagina. The cells also may have spread to block the tubes that connect the kidneys to the bladder (the ureters).

  • Stage IV cancer has spread to other parts of the body.

  • Stage IVA cancer has spread to the bladder or rectum (organs close to the cervix).

  • Stage IVB cancer has spread to other organs such as the lungs.