A 58-year-old man complains of weakness and tumor-like formations that appeared on the anterior surface of his neck and in the inguinal region. Palpation detects soft painless mobile cervical and inguinal lymph nodes up to 2 cm in diameter. The liver protrudes by 2 cm from the edge of the costal margin, the pole is at the umbilical level lower splenic In blood: erythrocytes 3.5 × 1012/L, Hb 88 g/L, leukocytes 86 × 10/L, ban neutrophils - 1%, segmented neutrophils- 10%, lymphocytes - 85%, eosinophilia 2%, basophil - 0%, monocytes 2%, erythrocyte sedimentation rate mm/hour, Gumprecht shadows. What is the most likely diagnosis?