Characteristics of Patients with Lymphadenopathy Undergoing Fine-Needle Aspiration Biopsy at a Tertiary Hospital in Surabaya, Indonesia Zuhdiyah Nihayati1,2, Nila Kurniasari 1,2,3*, Aditya Sita Sari1,3 Abstract Background: Lymphadenopathy is a common clinical condition encountered in the outpatient clinic. The etiology of lymphadenopathy varies, including reactive lymphoid hyperplasia, infectious disease, and malignancy.