RESUMEN
The evaluation of state of endothelium and plasma hemostasis, thrombocytopenia degree, rate of thrombo-hemorrhagic complications in adult patients with acute lymphoblastic leucosis in the period of disease manifestation was made. The thrombosis developed in 1 out of 24 (4.2%) examined patients, hemorrhagic syndrome in 11 out of 24 (45.8%) examined patients. The last case is closely linked with severity of thrombocytopenia occurred in patients with number of thrombocytes less than 50 x 109/l. At the same time, high correlation between number of leukemic cells and level of B-dimers (rs = 0.703) testifies that the leucosis process activates intravascular thrombus formation. The higher content of B-dimers in 100% of patients validates this assumption. The high levels of soluble thrombo-modulin and von Willebrand factor indicate the loss of thromboresistance by vessel endothelium and the activation of prothrombin mechanisms. The statistically valid coefficients of correlation between concentrations of thrombomodulin and D-dimers (rs = 0.598) and the level of von Willebrand factor and severity of hemorrhagic syndrome prove that disorders of blood coagulation under acute lymphoblast leucosis occur with active involvement of endothelium.