ATYPICAL PRESENTATION IN A CASE OF GRANULOMATOSIS WITH POLYANGIITIS

Granulomatosis with polyangiitis (GPA) is part of the anti-neutrophil cytoplasmic antibodies (ANCA) associated vasculitis, mostly being ANCA-c (anti proteinase 3) positive. Primarily it involves the upper respiratory tract and kidneys having an increased mortality in the absence of early diagnosis and correct treatment. The most common renal involvement is pauci-immune crescentic glomerulonephritis. We present the case of a patient with GPA with a particular onset of interstitial nephritis, possible by vasa recta vasculitis, in the absence of glomerulonephritis.