Twenty-six patients with stage III and IV esophageal cancer were randomly studied to evaluate the influence of fat emulsions (Intralipid) infusion on blood coagulation during total parenteral nutrition (TPN). The patients were divided into two groups: the first group (13 patients) received 24h. TPN; in the second group (13 patients) 1000 ml of 10% Intralipid were added to TPN via a peripheral vein over a period of 12 h. (1.8-2.1 g/kg/day). Primary hemostasis, platelet adhesiveness, alterations in fibrin formation and risk factors were evaluated before treatment (Time 0), after 7 days (Time 1) and after 14 days (Time 2). Statistical analysis of results was also carried out. On the basis of the obtained results it is observed that Intralipid at the administered doses, did not cause any alterations in blood coagulation and particularly in platelet adhesiveness.