Metabolic syndrome and hyperhomocysteinemia in patients with deep vein thrombosis: a case-control study.

We evaluated the prevalences of metabolic syndrome (MS) and hyperhomocysteinemia in patients with unprovoked deep vein thrombosis (DVT) and in controls. MS and hyperhomocysteinemia were significantly more prevalent in DVT patients than in controls. However, only the presence of MS was independently associated with DVT, and the coexistence of both risk factors did not increase the magnitude of the association.