4.
Working RPRS for predicting risk of LN involvement
| Score component | Score |
| Sum score is obtained by adding scores. RPRS, radiomics-based predictive risk score; LN, lymph node; CT, computed tomography. | |
| Age group (year) | |
| ≤60 | +1 |
| >60 | 0 |
| Tumor diameter (cm) | |
| ≤3 | 0 |
| >3 | +1 |
| Tumor location | |
| Peripheral | 0 |
| Central | +3 |
| CT-based LN status | |
| Negative | 0 |
| Positive | +1 |
| Radiomics-based classifier | |
| Low-risk | 0 |
| High-risk | +3 |
| Total
(sum of score for each component) |
9 (maximum) |
| Total RPRS | Risk of LN metastasis |
| 0−3 | Very low (0−20%) |
| 4−5 | Low (21%−40%) |
| 6 | Intermediate (41%−60%) |
| 7−8 | High (61%−80%) |
| 9 | Very high (81%−100%) |