Stages

It is important to know the stage of a cancer in order to plan treatment.

STAGES OF ENDOMETRIAL CANCER

Stage I

In stage I, cancer is found in the uterus only. Stage I is divided into stages IA, IB, and IC, based on how far the cancer has spread.

• Stage IA: Cancer is in the endometrium (lining of the uterus) only.
• Stage IB: Cancer has spread into the inner half of the myometrium (muscle layer of the uterus).
• Stage IC: Cancer has spread into the outer half of the myometrium.

Stage II

In stage II, cancer has spread from the uterus to the cervix, but has not spread outside the uterus. Stage II is divided into stages IIA and IIB, based on how far the cancer has spread into the cervix.

• Stage IIA: Cancer has spread to the glands where the cervix and uterus meet.
• Stage IIB: Cancer has spread into the connective tissue of the cervix.

Stage III

In stage III, cancer has spread beyond the uterus and cervix, but has not spread beyond the pelvis. Stage III is divided into stages IIIA, IIIB, and IIIC, based on how far the cancer has spread within the pelvis.

• Stage IIIA: Cancer has spread to one or more of the following:
  • the outermost layer of the uterus; or
  • tissue just beyond the uterus; or
  • the peritoneum (the tissue that lines the abdominal wall and covers most of the organs in the abdomen).
• Stage IIIB: Cancer has spread beyond the uterus and cervix, into the vagina.
• Stage IIIC: Cancer has spread to lymph nodes near the uterus.

Stage IV

In stage IV, cancer has spread beyond the pelvis. Stage IV is divided into stages IVA and IVB, based on how far the cancer has spread.

• Stage IVA: Cancer has spread to the bladder and/or bowel wall.
• Stage IVB: Cancer has spread to other parts of the body beyond the pelvis, including lymph nodes in the abdomen and/or groin.

Reference:

National Cancer Institute, USA.