The features of laboratory results were: 70, 2% 2 or 3 peripheral blood cell lineages decreased, neutropenia 81% (2, 415 / mm3), thrompocytopenia 72.6% (62, 000 / mm3); hyperferritinemia 98.8% (8, 711 µg / l), hypertriglyceridemia 90.5% (6.77 mmol / l), 97.6% hemophagocytosis on bone marrow aspiration; Average DNA-EBV load was 39.8 x 106 ± 11.8 x 106copies ml, with DNA-EBV> 106 accounting for 59.5%.