Pediatrics General a91dc181 Most common cause of Rapid progressive glomerulonephritis in children is A Good Pasteur syndrome B Membranous glomerulonephritis C Ig A nephropathy D Pauci - immune glomerulonephritis High-Yield Explanation Pauci - immune glomerulonephritis like Churg Strauss, Wegener's glomerulonephritis have highest risk for RPGN.