Table 1.
Division of tumor according to TNM category and FIGO stadium.
| Primary tumor | TNM category | FIGO stadium |
|---|---|---|
| The primary tumor cannot be estimated | Tx | |
| Without primary tumor | T0 | 0 |
| Minimal microscopic stromal invasion | T1a1 | Ia1 |
| Stromal invasion up to 5 mm in depth from the epithelial base and up to 7 mm in horizontal spread | T1a2 | Ia2 |
| Tumor greater than T1a2 | T1b | Ib |
| Invasion of the upper third of the vagina | T2a | IIa |
| Invasion of internal 2/3 parametrium | T2b | IIb |
| Invasion of the lower third of the vagina without spread to the wall of the pelvis | T3a | IIIa |
| Invasion of the parametrium to the wall of the pelvis and/or causes a hydronephrosis or a irregular kidney function | T3b | IIIb |
| Invasion of mucous membranes of the bladder or rectum and/or spreads beyond the pelvis | T4 | IVa |
| Distant metastases | M1 | IVb |