A 53-year-old patient complains of weakness, lack of appetite, weight loss, and an increased body temperature. Objectively, hepatomegaly and lymphadenopathy with doughy lymph nodes are observed. Complete blood count: erythrocytes - 4.01012/L, hemoglobin - 110 g/L, leukocytes - 100-110109/L, basophils - 1%, eosinophils - 1%, band neutrophils - 1%, segmented neutrophils - 50%, lymphocytes - 47%, monocytes 2%,73%, Gumprecht shadows . What is the most likely diagnosis in this case?