Hyperlipidemia: a novel etiologic factor in deep vein thrombosis.

The possible association of hyperlipidemia and deep vein thrombosis (DVT) was investigated in 59 consecutive patients. The incidence of hyperlipidemia, judged by the value of serum total cholesterol and triglyceride, was unexpectedly high (overall 59%, high total cholesterol alone 25%, high triglyceride alone 9%, combined 25%), as compared with 29% of the control (p < 0.001). The idiopathic DVT patients (without known etiologic factors) had a higher incidence of hypercholesterolemia (63%) than the normal subjects (20%, p = 0.0002). The idiopathic DVT patients showed higher total cholesterol level of 255 +/- 72 mg/dl than that of 194 +/- 36 in the control subjects (p < 0.0001). And 67% of the idiopathic DVT patients were hyperlipidemic. Thereby, hyperlipidemia may be an important etiologic factor in DVT, which has not been recognized previously. The low incidence of DVT in Asians may, thus, be attributable to their lower cholesterol level.