A fatal case of propylthiouracil-induced ANCA-associated vasculitis resulting in rapidly progressive glomerulonephritis, acute hepatic failure, and cerebral angiitis

摘要

Abstract. Introduction: Propylthio-uracil (PTU)-induced antineutrophil cyto-plasmic antibody (ANCA)-associated vasculitis presenting with renal failure, acute hepatic failure, and cerebral angiitis is a rare yet fatal disease. Early diagnosis and management may help in reducing mortality and morbidity. Plasmapheresis and induction with either cyclophosphamide or rituximab is indicated. Understanding the pathophysiology and complex management of this disease poses challenges to clinicians. Case report: A 42-year-old woman presented with acute renal and hepatic failure. She had been on PTU for 11 months for Graves' disease. Initial urine microscopy showed red blood cell casts. Anti PR-3 antibodies were positive. Kidney biopsy revealed pauci-immune glomerulonephritis with crescent formation. Renal and hepatic failures were attributed to PTU-induced c-ANCA production as other serological workup was negative. Pulse steroids and plasmapheresis were initiated. Later she developed pneumonia. She was also given rituximab. After the first dose of rituximab,