<prompt> Pauci immune glomerulonephritis is seen in aEURAfter transplant in alposMicroscopic polyangiitisHenoch-Schonlein nephritisLupus  <response>: Microscopic polyangitis fRef Bobbins The p. 976 Rapidly progressive glomerulonephritis may be caused by number of different diseases, some restricted to the kidneys and others systemic. Although no single mechanism can explain all cases, there is little doubt that in most cases, the glomerular injury is immunologically mediated. Thus a practical classification divides rapidly progressive glomerulonephritis into three groups on the basis of immunological findings. RAPIDLY PROGRESSIVE GLOMERULONEPHRITIS II Type RPGN Type I RPGN anti GBM antibody m Immune I complex Type III RPGN Pauci immune Idiopathic Idiopathic ANCA associated Goodpasture Post infectious Idiopathic syndrome Systemic lupus Wegener erythematous granulomatosis Henoch schnolein Microscopic PAN purpura Microscopic polyangitis 