Nephrotic range proteinuria and rapid progression to end-stage kidney disease in seronegative pauci-immune necrotizing glomerulonephritis masked by cutaneous lesions: a case-based review
Antineutrophil cytoplasmic antibodies (ANCA)-negative pauci-immune necrotizing glomerulonephritis (PING) is a rare entity, representing a distinct subset of small-vessel vasculitis. The absence of ANCA does not exclude the diagnosis, and clinical suspicion should remain high in the presence of compatible systemic and r...