Table 1 2013 FIGO staging classification for cancer of the ovary, fallopian tube, and peritoneum
From: Primary fallopian tube carcinoma: review of MR imaging findings
Primary tumor (T) | ||
TNM | FIGO | Description |
Tx | – | Primary tumor cannot be assessed |
T0 | – | No evidence of primary tumor |
T1 | I | Tumor confined to the ovaries or fallopian tubes |
T1a | IA | Tumor limited to one ovary (capsule intact) or fallopian tube; no tumor on ovarian or fallopian tube surface; no malignant cells in ascites or peritoneal washings |
T1b | IB | Tumor limited to both ovaries (capsule intact) or fallopian tubes; no tumor on ovarian or fallopian tube surface; no malignant cells in ascites or peritoneal washing |
T1c | IC | Tumor limited to one or both ovaries or fallopian tubes with any of the following: |
IC1 | - Surgical spill | |
IC2 | - Capsule ruptured before surgery or tumor on ovarian or fallopian tube surface | |
IC3 | - Malignant cells in the ascites or peritoneal washings | |
T2 | II | Tumor involves one or both ovaries or fallopian tubes with pelvic extension (below pelvic brim) or peritoneal cancer |
T2a | IIA | Extension and/or implants on uterus and/or tube(s) and/or ovaries |
T2b | IIB | Extension to other pelvic intraperitoneal tissues |
T3 | III | Tumor involves one or both ovaries or fallopian tubes, or peritoneal cancer, with cytologically or histologically confirmed spread to the peritoneum outside the pelvis and/or metastases to the retroperitoneal lymph nodes |
T3a | IIIA | Positive retroperitoneal lymph nodes and/or microscopic metastasis beyond pelvis |
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 | |
T3b | IIIB | Macroscopic peritoneal metastasis beyond pelvis up to 2 cm in greatest dimension, with or without metastasis to the retroperitoneal lymph nodes |
T3c | 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) |
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 the abdominal cavity) | |
Regional lymph nodes (N) | ||
Nx | – | Regional lymph nodes cannot be assessed |
N0 | – | No regional lymph node metastases |
N1 | III | Regional lymph node metastases |
Distant metastasis (M) | ||
M0 | – | No distant metastases |
M1 | IV | Distant metastasis (excludes peritoneal metastases) |
IVA | Pleural effusion with positive cytology | |
IVB | Parenchymal metastasis and metastases to extra-abdominal organs (including inguinal lymph nodes and lymph nodes outside the abdominal cavity)# | |