"In patients with malignancy, bland thrombus may form due to abnormalities of Virchow's triad, e.g., venous flow haemodynamic changes secondary to extrinsic compression of a nearby tumour, not by direct invasion, usually at the portal vein and IVC in a setting of hepatic, renal, or other proximate malignancy. Correct discrimination between tumour thrombus and bland thrombus is helpful for therapeutic strategies and prognostication."
"Bland thrombus is a term used to describe any non-malignant venous thrombus (e.g. a "normal" DVT). However, the term is most often used in the context of malignancy to differentiate between non-malignant and malignant clots, as their management may differ; of course, they often coexist."
"In patients with malignancy, bland thrombus may form due to abnormalities of Virchow's triad, e.g., venous flow haemodynamic changes secondary to extrinsic compression of a nearby tumour, not by direct invasion, usually at the portal vein and IVC in a setting of hepatic, renal, or other proximate malignancy. Correct discrimination between tumour thrombus and bland thrombus is helpful for therapeutic strategies and prognostication."