Refractory hemophagocytic syndrome in a patient with acute myelocytic leukemia

![Figure][1] A 46-year-old man was referred for acute myelocytic leukemia (AML) and pneumonia. On admission, physical examination findings included high fever and hepatosplenomegaly. The peripheral blood count results were as follows: hemoglobin level, 7.9 g/dL; platelet count, 7 × 109/L;