Rationale:Genitourinary tuberculosis can develop during the disease course of disseminated disease and the distinctive histological finding is epithelioid granuloma with or without caseation and accompanied Langhans-type giant cells.Barely,the lesion is only restricted to kidney involving both glomerular and extraglomerular compartment.Association with immune complex-mediated glomerulonephritis has been sparsely reported in the literature.Patient concern:A 42-year-old non-diabetic,non-hypertensive male presented with generalized body swelling and frothing of urine for 3 months.Diagnosis:Membranous nephropathy with tuberculous interstitial nephritis.Intervention:Anti-tuberculous therapy for extrapulmonary tuberculosis was administered along with low dose corticosteroid.Outcomes:Reduction of proteinuria was achieved at one month follow-up visit.Lessons:Tuberculosis should be considered as a potentially treatable cause of secondary membranous nephropathy as pharmacotherapy greatly helps improve the outcome.
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