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Growth limited to the ovaries
Growth limited to one ovary; no ascites present containing malignant cells. No tumor on the external surface; capsule intact.
Growth limited to both ovaries; no ascites present containing malignant cells. No tumor on the external surfaces; capsules intact
Tumor classified as either Stage I A or I B but with tumor on the surface of one or both ovaries; or with ruptures capsule(s); or with ascites containing malignant cells or with positive peritoneal washings.
Growth involving one or both ovaries, with pelvic extension.
Extension and/or metastases to the uterus and/or tubes.
Extension to other pelvic tissue.
Tumor classified as either Stage II A or II B but with tumor on the surface of one or both ovaries; or with capsule(s) ruptures; or with ascites containing malignant cells or with positive peritoneal washings
Tumor involiving one or both ovaries with peritoneal implants outside the pelvis and/or positive retroperitoneal or inguinal nodes. Superficial liver metastasis equals Stage III. Tumor is limited to the true pelvis but with histologically proven malignant extension to small bowel or omentrum.
Tumor grossly limited to the true pelvis with negative nodes but with histologically confirmed microscopic seeding of abdominal peritoneal surfaces
Tumor of one or both ovaries with histologically confirmed implants of abdominal peritoneal surfaces, none exceeding 2 cm in diameter; nodes are negative.
Abdominal implants greater than 2 cm in diameter and/or positive retroperitoneal or inguinal nodes.
Growth involving one or both ovaries with distant metastases. If pleural effusion is present, there must be positive cytological findings to allot a case to Stage IV. Parenchymal liver metastasis equals Stage IV.