Clinical Characteristic | Score |
---|---|
Active cancer (patient either receiving treatment for cancer within the previous 6 months or currently receiving palliative treatment) | 1 |
Paralysis, paresis, or recent cast immobilization of the lower extremities | 1 |
Recently bedridden for ≥ 3 days, or major surgery within the previous 12 weeks requiring general or regional anesthesia | 1 |
Localized tenderness along the distribution of the deep venous system | 1 |
Entire leg swelling | 1 |
Calf swelling at least 3 cm larger than that on the asymptomatic side (measured 10 cm below tibial tuberosity) | 1 |
Pitting edema confined to the symptomatic leg | 1 |
Collateral superficial veins (non-varicose) | 1 |
Previously documented deep vein thrombosis | 1 |
Alternative diagnosis at least as likely as deep vein thrombosis | -2 |