Table 3.
A combined scoring system for the preoperative differential diagnosing of ALT/WDLS.
| Predictive factors | Odds ratio | Points |
|---|---|---|
| Tumor size (MRI) | 4.83 | |
| ≤ 11 cm | 0 | |
| > 11 cm | 1 | |
| Tumor location (MRI) | 5.51 | |
| Upper limb or Other* | 0 | |
| Lower limb | 2 | |
| Thick septa (> 2 mm) (MRI) | 5.56 | |
| No | 0 | |
| Yes | 2 | |
| Enhancement of septa or nodular lesion (Enhanced MRI) | 15.10 | |
| No | 0 | |
| Yes | 3 | |
| Lipoblast (HE staining) | 17.60 | |
| Negative | 0 | |
| Positive | 3 | |
| Depth (MRI) | > 1000 | |
| Superficial | 0 | |
| Deeper than fascia | 5 | |
| Cutoff value | 9 / 16 points |
The total points ranged from 0 to 16, and the cutoff value was 9 points.
*: neck, chest, abdomen, back, and retroperitoneum.
MRI magnetic resonance imaging, HE hematoxylin and eosin, ALT atypical lipomatous tumor, WDLS well-differentiated liposarcoma.