Definition

The tumor is found in one or both ovaries or fallopian tubes. Stage I is divided into stages IA, IB, and IC. In stage IA, the tumor is found inside a single ovary or fallopian tube. In stage IB, the tumor is found inside both ovaries or fallopian tubes. In stage IC, the tumor is found inside one or both ovaries or fallopian tubes and one of the following is true: (1) tumor cells are found on the outside surface of one or both ovaries or fallopian tubes; or (2) the capsule (outer covering) of the ovary ruptured (broke open) before or during surgery; or (3) tumor cells are found in the fluid of the peritoneal cavity (the body cavity that contains most of the organs in the abdomen) or in washings of the peritoneum (tissue lining the peritoneal cavity).