A 54-year-old man was hospitalized with complaints of general weakness, fever of 38.6 ° C, shortness of breath during significant physical exertion, and frequent nosebleeds. He works in production of plastics, where he comes into contact with aromatic compounds. Objectively, his skin is pale and dry. Complete blood count shows the following: erythrocytes -2.1 10¹2 / L, Hb-90 g / Leukocytes -2.2 10 % / L, eosinophils 1 %, band neutrophils-1 %, segmented 75 %, lymphocytes-20 %, neutrophils myelocytes ESR-32 mm / hours. What is the most likely 3 %, platelets-30-10 % / L, diagnosis in this case