Table 4.
Univariate analysis of clinical and radiographic characteristics for PFS.
| Characteristics | N | 24th month PFS rate (%) | HR | 95% CI | P | |
|---|---|---|---|---|---|---|
| Hyperintense T2 proportion | 0–74% | 6 | 83.3 | 1 | 0.27 | |
| ≥75% | 32 | 55.5 | 1.42 | 0.76–2.65 | ||
| Hyperintense T1 CE proportion | 0-74% | 11 | 100 | 1 | 0.02* | |
| ≥75% | 27 | 43.1 | 3.37 | 1.23–9.25 | ||
| Size (mm) | 1–49 | 11 | 80.0 | 1 | 0.15 | |
| ≥50 | 27 | 51.0 | 3.0 | 0.67–13.27 | ||
| Tumor volume(mm3) | 1–96590 | 18 | 69.9 | 1 | 0.27 | |
| ≥96590 | 20 | 50.0 | 37 | 0.63–5.35 | ||
| Age(year) | 1–29 | 18 | 71.4 | 1 | 0.13 | |
| ≥29 | 20 | 47.7 | 2.31 | 0.79–6.81 | ||
| Sex | Male | 12 | 90.9 | 1 | 0.05 | |
| Female | 26 | 45.1 | 4.35 | 0.98–19.20 | ||
| Dominant shape | Round/oval | 7 | 42.9 | 1 | 0.60 | |
| Lobulated | 14 | 70.7 | 0.51 | 0.13–2.03 | 0.34 | |
| Infiltrative | 17 | 57.0 | 0.83 | 0.24–2.84 | 0.77 | |
| Multifocality | No | 28 | 58.6 | 1 | 0.87 | |
| Yes | 10 | 60.0 | 0.91 | 0.29–2.87 | ||
| Adjacent structure involvement | None | 10 | 46.7 | 1 | 0.86 | |
| Adjacent | 9 | 66.7 | 0.81 | 0.22–3.01 | 0.75 | |
| Encased | 14 | 55.0 | 0.97 | 0.29–3.25 | 0.96 | |
| Invaded | 5 | 80.0 | ||||
| Compartment of origin | Deep fascial/intermuscular | 27 | 62.0 | 1 | ||
| Intramuscular | 8 | 72.9 | 1.00 | 0.32–3.16 | ||
| Superficial fascial | 2 | 0 | 1.00 | 0.06–12.32 | ||
| Subcutaneous | 1 | 0 | / |
*P < 0.05; CI, confidence interval; HR, hazard ratio.