Table 1.
Description of the ultrasound-based total malignancy score system according to the characteristics of a nodule
| Nodule characteristic | Ultrasound malignancy score |
||
|---|---|---|---|
| 0 | 1 | 2 | |
| Number | Many | - | Single |
| Margins | Regular | - | Irregular |
| Color flow | Perinodular | Peri-intranodular | Intranodular |
| Structure | Colloidal | Solid | - |
| Echogenicity | Anechoic, isoechoic, or hyperechoic | Hypoechoic | - |
| Halo | Continuous | Discontinuous | - |
| Calcifications | Macrocalcifications | Microcalcifications | - |
| Growth | - | >20% in 6 months | - |
Adapted from Pompili et al. Ultrasound Med Biol 2013;39:1350-1355, with permission of Elsevier [15].