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26

NCCN Guidelines for Patients

®

:

Ovarian Cancer, Version 1.2017

3

Cancer staging

Ovarian cancer stages

Stage I

The tumor (cancer) is only in the ovaries. Cancer

may be found in one or both ovaries. But, it has not

spread to any other organs or tissues in the body.

See Figure 8.

Stage IA

– Cancer is only in one ovary and the

tumor is contained inside the ovary. The outer sac

(capsule) of the ovary is intact. There is no cancer on

the outside surface of the ovary. No cancer cells are

found in ascites or washings.

Stage IB

– Cancer is in both ovaries. The capsules

are intact and there is no cancer on the outside

surface of the ovaries. No cancer cells are found in

ascites or washings.

Stage IC

– Cancer is in one or both ovaries. And,

one or more of the following has happened:

†

†

Stage IC1

– The capsule of the ovary broke

open (ruptured) during surgery. This is called

surgical spill.

†

†

Stage IC2

– The capsule ruptured before

surgery, or cancer is on the outer surface of the

ovary.

†

†

Stage IC3

– Cancer cells are found in ascites

or washings.

Stage II

Cancer is in one or both ovaries and it has spread to

other organs or tissues within the pelvis. Cancer has

not spread outside the pelvis or to any lymph nodes.

See Figure 9.

Stage IIA

– Cancer has grown into and/or spread

implants on the uterus, fallopian tubes, or both.

Stage IIB

– Cancer has grown into and/or spread

implants on other organs or tissues in the pelvis. This

may include the bladder, sigmoid colon, rectum, or

the peritoneum within the pelvis. The peritoneum is

the tissue that lines the inside of the abdomen and

pelvis and covers most organs in this space.