Yonas GirmaAbdurrhman Kedir2026-06-222026-06-222025-01-19https://etd.aau.edu.et/handle/123456789/8545From benign infections to rare malignancies, lymph node enlargement, or lymphadenopathy, presents a diagnostic challenge. Children often experience harmless or infectious causes, while adults face a spectrum from benign to cancerous origins. Acute or chronic, unexplained cases emerge in 0.6% of the population yearly. Though only 1.1% link to cancer, this risk increases with age. Understanding these patterns aids in the proper evaluation and management of lymphadenopathy across different patient groupsen-USCytological patternClinicopathological Characteristicslymphadenopathypathology.Thesis