Brucellosis Masquerading as Disseminated Tuberculosis: A Clinical Case Report

Human brucellosis is a common zoonotic disease in certain regions of the world, especially in rural populations, yet it is often neglected. The index patient presented with prolonged fever and headache. Examination revealed hepatosplenomegaly, and investigations revealed transaminitis with bicytopenia with serological evidence positive for Brucella. The radiological picture suggested granulomatous disease with miliary nodules, and a bone marrow examination revealed a noncaseating granuloma. The case was unique and challenging, as the clinical picture was consistent with epidemiologically prevailing tuberculosis, which is also seen in brucellosis-endemic countries. Brucellosis mimicked disseminated tuberculosis, making the case intriguing to diagnose and treat. The case demonstrated that physicians need to have a high index of suspicion for brucellosis, which should be actively investigated in cases with prolonged fever. It also illustrated the fundamental importance of teamwork and the centrality of the multidisciplinary team in the planning and prioritization of treatment.