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Thrombosis is a common complication of cancer and is thought to occur most commonly in patients with solid tumors, such as those of the lung and gastrointestinal tract. Hematologic malignancies also are associated with thrombus formation, but the magnitude of this risk is unclear.
To address this uncertainty, investigators from Argentina and Italy performed a meta-analysis of published studies in which researchers reported thrombotic events in cancer patients, including those with lymphomas. Among 1149 recorded thromboses in 18,018 lymphoma patients, 83.5% were venous (80% deep venous thromboses, 13% pulmonary emboli, 7% both), and 16.5% were arterial (56% myocardial infarctions, 34% strokes, 10% not described). Overall, the incidence rate (…