| Feature | Feature Definition | Feature Distribution | |
|---|---|---|---|
| Benign | Malignant | ||
| Tσtumor | the σ of graytumor | Smaller | Larger |
| Tσedge | the σ of grayedge | Larger | Smaller |
| TRltRrt | graytumor/grayedge | Larger | Smaller |
| Mcompt | 4AreaPerimeter2 | Larger | Smaller |
| Mspicu | =04R/=42R | Larger | Smaller |
| Mlobus | #{local extrema in r(θ)} | Fewer | More |
| Mrectlike | areatumor/arearect | Larger | Smaller |
| Meccent | Lshort/Lshort | Smaller | Larger |