Table 1.
Tumour characteristics
|
Total N (%) 1159 |
Radical N (%) 1053 |
Incomplete N (%) 106 |
||
|---|---|---|---|---|
| Location | Head and neck | 762 (65.8) | 680 (64.6) | 82 (77.4) |
| Trunk | 104 (9.0) | 97 (9.2) | 7 (6.6) | |
| Upper extremity | 179 (15.4) | 163 (15.5) | 16 (15.1) | |
| Lower extremity | 114 (9.8) | 113 (10.7) | 1 (0.9) | |
| Tumour size, mm | Median‐mean (range) | 10–12.6 (2–75) | 10–12.4 (2–75) | 12–14.6 (3–45) |
| ≤20 | 935 (80.7) | 851 (80.9) | 84 (79.2) | |
| >20 | 131 (11.3) | 110 (10.4) | 21 (19.8) | |
| Missing | 93 (8.0) | 92 (8.7) | 1 (1.0) | |
| Differentiation | Well | 795 (68.6) | 718 (68.2) | 77 (72.6) |
| Moderate | 171 (14.8) | 161 (15.3) | 10 (9.4) | |
| Poor | 118 (10.2) | 105 (10.0) | 13 (12.3) | |
| Undifferentiated | 57 (4.9) | 52 (4.9) | 5 (4.7) | |
| Missing | 18 (1.6) | 17 (1.6) | 1 (1.0) | |
| Depth | Papillary dermis | 10 (0.9) | 10 (0.9) | 0 |
| Reticular dermis | 27 (2.3) | 27 (2.6) | 0 | |
| Dermis unspecified | 869 (75.0) | 824 (78.2) | 45 (42.5) | |
| Subcutis | 190 (16.4) | 143 (13.6) | 47 (44.3) | |
| Fascia | 3 (0.3) | 1 (0.1) | 2 (1.9) | |
| Cartilage | 16 (1.4) | 12 (1.1) | 4 (3.8) | |
| Muscle | 24 (2.1) | 16 (1.5) | 8 (7.5) | |
| Bone | 1 (0.1) | 1 (0.1) | 0 | |
| Missing | 19 (1.6) | 19 (1.8) | 0 | |
| Perineural invasion | Yes | 14 (1.2) | 9 (0.9) | 5 (4.7) |
| No | 1145 (98.8) | 1044 (99.1) | 101 (95.3) | |
| Vasoinvasion | Yes | 6 (0.5) | 4 (0.4) | 2 (1.9) |
| No | 1153 (99.5) | 1049 (99.6) | 104 (98.1) | |