Histologically confirmed adenocarcinoma of colon or rectum
Age ≥ 20 years
Patients receiving curative or palliative abdominal surgery (lasting ≥ 30 minutes) (both open and laparoscopic surgery will be included)
You may not be if
No histological confirmation
Patients who already have VTE (or pulmonary embolism) at the screening periods of this study
Past medical history of VTE or pulmonary embolism
Patients with the history of other cancer (Patients who were disease-free for \> 5 years from previous other cancer is allowed to be included in this study)
Patients with thrombophilia or other comorbidities requiring anticoagulation (i.e. atrial fibrillation or cerebral infarct requiring anticoagulation
Clareo Health | Incidence of Venous Thromboembolism Following Surgery in Patients With Colorectal Cancer
