['Circulating tissue factor (TF) is associated with inflammation and may contribute to thrombotic events. Aim of this study was to analyze circulating TF activity and proinflammatory cytokines in patients with deep venous thrombosis.', 'Forty-eight patients with deep vein thrombosis and 45 control subjects were included. Venous blood samples were obtained at diagnosis for analysis of TF activity, TF antigen, prothrombin fragment F1 + 2, microparticles (expressing phosphatidylserine and supporting FXa generation), Interleukin (IL)-1beta, IL-6, IL-8, IL-10, IL-12 and tumor-necrosis-factor-alpha (TNF).', 'TF antigen, activity and microparticles were similar in both groups: In contrast, a significant increase in plasma IL-6, IL-8 and F1 + 2 levels was found in thrombosis. This increase in IL-6 and IL-8 as well as F1 + 2 was not correlated with the extent of thrombosis, predisposing factors or onset of symptoms.'] Are circulating tissue factor and microparticles increased in patients with deep vein thrombosis?