A 20-year-old patient has made an appointment with a dentist. On external examination the patient is pale, complains of long-term fever, insomnia, weight loss of 13 kg within 5 months. The patient is homeless. The therapist’s consultation states: all groups of the lymph nodes are enlarged, hepatolienal syndrome. Blood test: leukocytes - 2,2 × 109/l. Make the diagnosis: