Table 1.
Distribution of patient, tumour, and treatment characteristics by margin of resection
| Factor | Patient group | Positive margin | Close margin | Wide margin | P value |
|---|---|---|---|---|---|
| (N = 7) n (%) | (N = 12) n (%) | (N = 28) n (%) | |||
| Age | < 22 | 4 (17.4) | 3 (13) | 16 (69.6) | 0.158 |
| ≥ 22 | 3 (12.5) | 9 (37.5) | 12 (50) | ||
| Gender | Male | 3 (10.7) | 7 (25) | 18 (64.3) | 0.583 |
| Female | 4 (21.1) | 5 (26.3) | 10 (52.6) | ||
| Tumour site | Extremities | 5 (12.2) | 12 (29.3) | 24 (58.5) | 0.184 |
| Trunk | 2 (33.3) | 0 (0) | 4 (66.7) | ||
| MSTS stage | IIB | 6 (15) | 9 (22.5) | 25 (62.5) | 0.508 |
| IIIB | 1 (14.3) | 3 (42.9) | 3 (42.9) | ||
| Surgery type | Amputation | 2 (33.3) | 0 (0) | 4 (66.7) | 0.184 |
| Resection | 5 (12.2) | 12 (29.3) | 24 (58.5) | ||
| Pathological type | Osteoblastic | 4 (10.5) | 10 (26.3) | 24 (63.2) | 0.221 |
| Other type | 3 (33.3) | 2 (22.2) | 4 (44.4) | ||
| Preop chemo | CDDP, ADRIA, MTX | 4 (12.9) | 8 (25.8) | 19 (61.3) | 0.865 |
| Other regimens | 3 (18.8) | 4 (25) | 9 (56.3) | ||
| Size (8.2 cm cut-off) | <8.2 cm | 1 (4.5) | 7 (31.8) | 14 (63.6) | 0.145 |
| ≥8.2 cm | 6 (25) | 5 (20.8) | 13 (54.2) | ||
| Histological response | Good (≥90%) | 2 (16.7) | 1 (8.3) | 9 (75) | 0.280 |
| Poor (<90%) | 5 (14.3) | 11 (31.4) | 19 (54.3) |
Preop chemo preoperative chemotherapy regimens, CDDP cisplatin, ADRIA adriamycin, MTX methotrexate