FIGO staging classification for cancer of the ovary, fallopian tube, and peritoneum (2014)
| Stage | Description | TNM classification |
|---|---|
| I | Tumor confined to ovaries or fallopian tube(s) [T1‐N0‐M0] |
| IA | Tumor limited to 1 ovary (capsule intact) or fallopian tube; no tumor on ovarian or fallopian tube surface; no malignant cells in the ascites or peritoneal washings [T1a‐N0‐M0] |
| IB | Tumor limited to both ovaries (capsules intact) or fallopian tubes; no tumor on ovarian or fallopian tube surface; no malignant cells in the ascites or peritoneal washings [T1b‐N0‐M0] |
| IC | Tumor limited to 1 or both ovaries or fallopian tubes, with any of the following: |
| IC1 | Surgical spill [T1c1‐N0‐M0] |
| IC2 | Capsule ruptured before surgery or tumor on ovarian or fallopian tube surface [T1c2‐N0‐M0] |
| IC3 | Malignant cells in the ascites or peritoneal washings [T1c3‐N0‐M0] |
| II | Tumor involves 1 or both ovaries or fallopian tubes with pelvic extension (below pelvic brim) or peritoneal cancer [T2-N0-M0] |
| IIA | Extension and/or implants on uterus and/or fallopian tubes and/or ovaries [T2a-N0-M0] |
| IIB | Extension to other pelvic intraperitoneal tissues [T2b-N0-M0] |
| III | Tumor involves 1 or both ovaries or fallopian tubes, or peritoneal cancer, with cytologically or histologically confirmed spread to the peritoneum outside the pelvis and/or metastasis to the retroperitoneal lymph nodes [T1/T2-N1-M0] |
| IIIA1 | Positive retroperitoneal lymph nodes only (cytologically or histologically proven): |
| IIIA1(i) | Metastasis up to 10 mm in greatest dimension |
| IIIA1(ii) | Metastasis more than 10 mm in greatest dimension |
| IIIA2 | Microscopic extrapelvic (above the pelvic brim) peritoneal involvement with or without positive retroperitoneal lymph nodes [T3a2‐N0/N1‐M0] |
| IIIB | Macroscopic peritoneal metastasis beyond the pelvis up to 2 cm in greatest dimension, with or without metastasis to the retroperitoneal lymph nodes [T3b-N0/N1-M0] |
| IIIC | Macroscopic peritoneal metastasis beyond the pelvis more than 2 cm in greatest dimension, with or without metastasis to the retroperitoneal lymph nodes (includes extension of tumor to capsule of liver and spleen without parenchymal involvement of either organ) [T3c-N0/N1-M0] |
| IV | Distant metastasis excluding peritoneal metastases |
| IVA | Pleural effusion with positive cytology |
| IVB | Parenchymal metastases and metastases to extra?abdominal organs (including inguinal lymph nodes and lymph nodes outside of the abdominal cavity) [Any T, any N, M1] |