Table 3.19-11. Risk assessment score for venous thromboembolism in outpatients with cancer treated with chemotherapy (Khorana score)

Clinical features

Score

Type of cancer

Stomach, pancreas (very high risk)

2

Lung, lymphoma, gynecologic, genitourinary (high risk)

1

Platelet count before chemotherapy ≥350,000/microL

1

White blood cell count before chemotherapy >11,000/microL

1

Hemoglobin level before chemotherapy <10 g/dL and/or planned use of erythropoiesis-stimulating agents

1

Body mass index ≥35 kg/m2

1

Interpretation:

Score 0: Low risk

Score 1-2: Intermediate risk

Score ≥3: High risk

Adapted from Blood. 2008;111(10):4902-7.