There are four stages of ovarian cancer:
Stage I: The cancer is confined to the ovary
Stage II: The cancer is confined to the pelvic organs
Stage III: Intraabdominal spread of the cancer to the omentum, diaphragm or lymph nodes
Stage IV: The cancer has spread outside abdominal cavity, spread in the parenchyma and presence in the pleural effusion or extraabdominal lymph nodes