Onset of Microscopic Polyangiitis in Binephrectomied Patient on Chronic Hemodialysis—Case Report

INTRODUCTION: Microscopic polyangiitis (MPA) is one of the causes of the pulmonary–renal syndrome associated with elevated non-specific markers of inflammation and antineutrophil cytoplasmic autoantibody (ANCA) positivity in 50–75%. De novo occurrence of the disease in patients on chronic hemodialysis (HD) has not been described. CASE PRESENTATION: We presented patient who developed MPO-ANCA-associated MPA with lung and musculoskeletal involvement after 4 years on regular HD due to bilateral nephrectomy. After excluding the other causes of MPO-ANCA positivity, diagnosis was confirmed even without renal biopsy. Patient received standard immunosuppression therapy and he is still in remission after 27 months. CONCLUSION: The onset of immune-mediated disease could be observed even after introduction of renal replacement therapy, which may be a diagnostic problem. Early recognition and traditional immunosuppressive regiment may provide successful outcome.