Table 1.
Clinicopathologic factors according to standardized uptake values
| Variables | Patients | SUVmax | P value | |
|---|---|---|---|---|
| ≥6.1 (n = 7) | <6.1 (n = 13) | |||
| Age, years, median (range) | 35 (8–56) | 36 (25–50) | 35 (8–56) | 0.428 |
| Sex | 0.455 | |||
| Male | 11 | 3 | 8 | |
| Female | 9 | 4 | 5 | |
| Size, cm, median (range) | 5.5 (2.0–16.0) | 8.0 (2.0–16.0) | 5.3 (3.0–8.6) | 0.234 |
| Histologic subtype | 0.559 | |||
| Monophasic | 8 | |||
| Biphasic | 13 | 5 | 3 | |
| Poorly differentiated | 5 | 2 | 2 | |
| Mitotic count (mitoses per 10 HPF*) | 2 | 0 | 0.662 | |
| 0–9 | 11 | 3 | 8 | |
| 10–19 | 5 | 2 | 3 | |
| ≥20 | 4 | 2 | 2 | |
| Tumor necrosis | 0.059 | |||
| No necrosis | 7 | 1 | 6 | |
| <50 % | 7 | 2 | 5 | |
| ≥50 % | 6 | 4 | 2 | |
| Histological grade | 0.005 | |||
| Grade 2 (responder) | 9 | 0 | 9 | |
| Grade 3 (non-responder) | 11 | 7 | 4 | |
| Anatomic site | 0.158 | |||
| Extremity | 13 | 3 | 10 | |
| Non-extremity | 7 | 4 | 2 | |
| Resection margin | 0.531 | |||
| Inadequate | 4 | 2 | 2 | |
| Adequate | 16 | 5 | 11 | |
| Neoadjuvant chemotherapy | 0.531 | |||
| Yes | 16 | 3 | 11 | |
| No | 4 | 1 | 2 | |
| Metastasis at diagnosis | 0.158 | |||
| Yes | 7 | 2 | 3 | |
| No | 13 | 2 | 10 |
*HPF high-power field