Not all cancer patients will require prophylactic anticoagulation. The decision is typically based on a risk assessment that considers several factors: - Type and stage of cancer: Certain cancers (e.g., pancreatic, gastric) are associated with a higher risk of VTE. - Treatment type: Treatments like chemotherapy and hormonal therapy can elevate the risk of blood clots. - Patient-related factors: Age, previous history of VTE, immobility, and other comorbidities like obesity or cardiac conditions.