Relation of tumour characteristics to metastases and VEGF
| Metastasis | Mean VEGF | |
| Cell type | ||
| Spindle | 3/17 (17.6%) | 2.11 |
| Mixed | 8/21 (38.1%) | 2.04 |
| Epithelioid | 5/5 (100%) | 3.8 |
| Size | ||
| Small | 3/20 (15%) | 2 |
| Medium | 10/17 (58.8) | 2.16 |
| Large | 3/6 (50%) | 3.33 |
| Mitoses | ||
| 0–9 per 20 hpf | 9/32 (28.2%) | 2.29 |
| >10 per 20 hpf | 7/11 (63.6%) | 2.15 |
| Necrosis | ||
| Absent | 9/26 (34.6%) | 1.81 |
| Present | 7/17 (41.2) | 2.85 |
| Pigmentation | ||
| Minimal | 6/21 (28.6%) | 2.86 |
| Moderate | 7/11 (63.4%) | 1.67 |
| Marked | 3/11 (27.3%) | 1.91 |
| Microvascular pattern | ||
| Other | 6/28 (21.4%) | 1.93 |
| Loop/networks | 10/14 (71.4%) | 2.78 |
| Microvascular density | ||
| <75/mm2 | 1/14 (7.1%) | 2 |
| 75–150/mm2 | 7/13 (53.8%) | 2.46 |
| 150–225/mm2 | 3/4 (75.0%) | 1.71 |
| >225/mm2 | 5/12 (41.7%) | 4.85 |