Primary tumor (T) |
Leiomyosarcoma and endometrial stromal sarcoma |
T category | FIGO stage | T criteria |
TX | | Primary tumor cannot be assessed |
T0 | | No evidence of primary tumor |
T1 | I | Tumor limited to the uterus |
T1a | IA | Tumor 5 cm or less in greatest dimension |
T1b | IB | Tumor more than 5 cm |
T2 | II | Tumor extends beyond the uterus, within the pelvis |
T2a | IIA | Tumor involves adnexa |
T2b | IIB | Tumor involves other pelvic tissues |
T3 | III | Tumor infiltrates abdominal tissues |
T3a | IIIA | One site |
T3b | IIIB | More than one site |
T4 | IVA | Tumor invades bladder or rectum |
Adenosarcoma |
T category | FIGO stage | T criteria |
TX | | Primary tumor cannot be assessed |
T0 | | No evidence of primary tumor |
T1 | I | Tumor limited to the uterus |
T1a | IA | Tumor limited to the endometrium/endocervix |
T1b | IB | Tumor invades to less than half of the myometrium |
T1c | IC | Tumor invades one half or more of the myometrium |
T2 | II | Tumor extends beyond the uterus, within the pelvis |
T2a | IIA | Tumor involves adnexa |
T2b | IIB | Tumor involves other pelvic tissues |
T3 | III | Tumor infiltrates abdominal tissues |
T3a | IIIA | One site |
T3b | IIIB | More than one site |
T4 | IVA | Tumor invades bladder or rectum |
Regional lymph nodes (N) |
All uterine sarcomas |
N category | FIGO stage | N criteria |
NX | | Regional lymph nodes cannot be assessed |
N0 | | No regional lymph node metastasis |
N0(i+) | | Isolated tumor cells in regional lymph node(s) no greater than 0.2 mm |
N1 | IIIC | Regional lymph node metastasis |
Distant metastasis (M) |
All uterine sarcomas |
M category | FIGO stage | M criteria |
M0 | | No distant metastasis |
M1 | IVB | Distant metastasis (excluding adnexa, pelvic, and abdominal tissues) |
Prognostic stage groups |
Leiomyosarcoma and endometrial stromal sarcoma |
When T is... | And N is... | And M is... | Then the stage group is... |
T1 | N0 | M0 | I |
T1a | N0 | M0 | IA |
T1b | N0 | M0 | IB |
T2 | N0 | M0 | II |
T3a | N0 | M0 | IIIA |
T3b | N0 | M0 | IIIB |
T1-3 | N1 | M0 | IIIC |
T4 | Any N | M0 | IVA |
Any T | Any N | M1 | IVB |
Adenosarcoma |
When T is... | And N is... | And M is... | Then the stage group is... |
T1 | N0 | M0 | I |
T1a | N0 | M0 | IA |
T1b | N0 | M0 | IB |
T1c | N0 | M0 | IC |
T2 | N0 | M0 | II |
T3a | N0 | M0 | IIIA |
T3b | N0 | M0 | IIIB |
T1-3 | N1 | M0 | IIIC |
T4 | Any N | M0 | IVA |
Any T | Any N | M1 | IVB |