| Stade tumoral | TNM | n = 16 |
| Stade I | T1aN0M0 | 4/26 15.4% |
| T1bN0M0 | 2/26 7.7% | |
| T2N0M0 | 7/26 26.9% | |
| T3N0M0 | 8/26 30.8% | |
| Stade II | T4N1M1 | 3/26 11.5% |
| T3N1M1 | 2/26 7.7% |