Proceedings of the International scientific and practical conference ―Modern Science: Challenges and Perspectives‖ (February 9-11, 2026) / Publisher website: www.naukainfo.com. - London, United Kingdom, 2026. - 121 p.

105 Immunological testing: IgG - 17.5 U, IgA – 3.1 U, IgM – 2.30 U. ECG: signs of myocardial hypoxia. Abdominal ultrasound: the liver was in a typical position, did not extend below the costal margin; right lobe size – 120 mm, left lobe – 60 mm; parenchyma of normal echogenicity; bile ducts not dilated; gallbladder wall thickened with heterogeneous contents. The pancreas was visualized throughout its entire length, with increased echogenicity. The spleen was not enlarged, with homogeneous structure, measuring 120 × 50 mm. The kidneys were in a typical position, with clear and smooth contours; corticomedullary differentiation was preserved; parenchymal echogenicity was normal; the central echo complex was not dilated. Mesenteric lymph nodes were small and not enlarged. Lymph node ultrasound: along the vascular bundles, submandibular and posterior cervical lymph nodes measured 15– 22–25 mm, were hypoechoic, with minimal blood flow; supraclavicular and infraclavicular lymph nodes measured 12–19 mm; mediastinal lymph nodes – 10–12 mm; right and left axillary lymph nodes – 10 -15-5-35 mm; bilateral inguinal lymph nodes measured 10–16 mm, hypoechoic, with minimal blood flow. Based on the complaints, medical history, clinical findings, and instrumental investigations, a clinical diagnosis of Hodgkin lymphoma was established. A biopsy of the right axillary lymph node was performed at the Municipal Non-Profit Enterprise ―Ivano-Frankivsk Regional Children’s Clinical Hospital of the Ivano- Frankivsk Regional Council,‖ Ivano-Frankivsk. Excisional biopsy results of the affected right axillary lymph node: the cytoarchitectonics was partially effaced; areas of lymphocyte proliferation with partial histiocytic proliferation without fibrous bands were present; occasional large round lymphocytes with large hyperchromatic nuclei were observed. Conclusion: Hodgkin lymphoma, lymphohistiocytic variant. The histological material was sent to the Department of Pathology of Danylo Halytsky Lviv National Medical University. Microscopic examination results of the right axillary lymph node: the lymph node architecture was preserved; the number of lymphoid follicles was increased; germinal centers were enlarged and of normal