Table 1. Characteristics of the patients and tumours in the Helsinki and Lund material.
| Characteristic | Helsinki N (%) | Helsinki, missing slides (n=84) N (%) | Lund N (%) |
|---|---|---|---|
| Age (in years) | |||
| Mean (range) | 57 (16–92) | 58 (18–92) | 63 (17–96) |
| Sex | |||
| Male | 153 (52) | 42 (50) | 197 (56) |
| Female | 141 (48) | 42 (50) | 157 (44) |
| Tumour size (cm) | |||
| ⩽5 | 153 (52) | 48 (57) | 135 (38) |
| >5 and ⩽10 | 93 (31) | 24 (29) | 140 (40) |
| >10 | 48 (16) | 12 (14) | 79 (22) |
| Median | 5 | 5 | 6 |
| Median, superficiala | 3 | 3 | 5 |
| Median, deep | 7 | 6 | 8 |
| Necrosis | |||
| No | 153 (52) | ND | 148 (42) |
| Yes | 141 (48) | 206 (58) | |
| Vascular invasion | |||
| No | 255 (87) | ND | 276 (78) |
| Yes | 39 (13) | 78 (22) | |
| Histological grade | |||
| 1 | 12 (4) | 3 (4) | 20 (6) |
| 2 | 71 (24) | 23 (27) | 54 (15) |
| 3 | 103 (35) | 25 (30) | 99 (28) |
| 4 | 108 (37) | 33 (39) | 181 (51) |
| Tumour depth | |||
| Superficial | 109 (37) | 28 (33) | 117 (33) |
| Deep | 185 (63) | 56 (67) | 237 (67) |
| Location | |||
| Extremity | 205 (70) | 58 (69) | 279 (79) |
| Axis of body | 89 (30) | 26 (31) | 75 (21) |
| Histological subtype | |||
| MFH | 123 (42) | 20 (24) | 181 (51) |
| LMS | 42 (14) | 23 (27) | 52 (15) |
| LS | 44 (15) | 18 (21) | 41 (12) |
| SS | 32 (11) | 7 (8) | 21 (6) |
| MPNST | 13 (4) | 0 | 10 (3) |
| Others | 40 (14) | 16 (20) | 49 (14) |
| Surgical margin | |||
| Intralesional | 27 (9) | 8 (10) | 31 (9) |
| Marginal | 139 (47) | 39 (46) | 133 (38) |
| Wide | 128 (44) | 37 (44) | 190 (53) |
Abbreviations: MFH=malignant fibrous histiosytoma; LMS=leiomyosarcoma; LS=liposarcoma; SS=synovial sarcoma; MPNST=malignant peripheral nerve sheath tumour; ND=no data.
a
Subcutaneous tumours with or without cutaneous extention but without involvement of the deep fascia. Otherwise deep.