| Histological features | |||||||
|---|---|---|---|---|---|---|---|
| Differentiation | Invasion | ||||||
| Well | Moderate | Poor | Slight | Moderate | Extensive | ||
| All cases (n=41) | 12 | 22 | 7 | 9 | 21 | 11 | |
| Cases of recurrence or metastasis (n=10) | 2 (16.7%) | 6 (27.3%) | 2 (28.6%) | 2 (22.2%) | 3 (14.3%) | 5 (45.4%) | |
| Cases of tumour related death (n=4) | 0 0% | 2 (9.1%) | 2 (28.6%) | 0 0% | 1 (4.8%) | 3 (27.3%) | |