Factor | Total No. | Surgery and radiotherapy | Surgery alone | P-value |
---|---|---|---|---|
Follow-up (yrs) | 0 (1–44) | 7.8 (0.6 – 44.3) | 3.1 (0.1 – 24.9) | < 0.0001 |
Age (yrs) | 33 (1–78) | 33 (1–78) | 32 (1–65) | n.s.* |
Gender | ||||
Male | 32 (29%) | 20 (29%) | 12 (29%) | n.s. |
Female | 78 (71%) | 48 (71%) | 30 (71%) | |
Tumour localization | 0.003 | |||
Abdominal wall, testicular sheath | 25 (23%) | 10 (15%) | 15 (36%) | |
Head and neck | 7 (6%) | 6 (9%) | 1 (2%) | |
Extremities, shoulder girdle, hip | 56 (51%) | 43 (63%) | 13 (31%) | |
Trunk, pelvis, breast | 22 (20%) | 9 (13%) | 13 (31%) | |
Resection margin | 0.004 | |||
R0 | 16 (14%) | 4 (6%) | 12 (29%) | |
R1 | 47 (43%) | 36 (53%) | 11 (26%) | |
R2 | 20 (18%) | 14 (21%) | 6 (14%) | |
R3 | 13 (12%) | 7 (10%) | 6 (14%) | |
Unknown | 14 (13%) | 7 (10%) | 7 (17%) | |
Number re-operations | 2.3/2.0 (1–12) | 2.65/2.0 (1–7) | 1.74/1.0 (1–12) | < 0.0001 |
Radiotherapy dose | 56.5/59.4 | 57.4/59.4 | - | - |
> 50 Gy | 58 (53%) | 58 (85%) | - | |
< = 50 Gy | 8 (8%) | 8 (12%) | - | |
No dose, unknown | 44 (39%) | 2 (3%) | - | |
Fraction size | 2.28/2.0 | 2.29/2.00 | - | - |
>= 2 Gy | 40 (36%) | 40 (59%) | - | |
< 2 Gy | 15 (14%) | 15 (22%) | - | |
No dose, unknown | 55 (50%) | 13 (19%) | - | |
Indication radiotherapy | ||||
Adjuvant | 24 (22%) | 24 (35%) | - | - |
At recurrence | 39 (35%) | 39 (57%) | - | |
Primary | 5 (4%) | 5 (7%) | - | |
Etiological factor | ||||
Yes | 44 (40%) | 29 (43%) | 15 (36%) | n.s. |
No | 66 (60%) | 39 (57%) | 27 (64%) |