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 |
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