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What is A child was diagnosed as a case of pauci–immune crescentic glomerulonephritis. The treatment to be given in this child is – and explain in detail?
Panel-immune glomerulonephritis 

Pauci-immune glomerulonephritis is defined as the lack of anti-GBM antibodies or immune complex.
It is a type of rapidly progressive glomerulonephritis.
Causes are :-
Idiopathic renal-limited crescentic glomerulonephritis (ANCA associated). 
Microscopic PAN        
Microscopic polyangitis            
Wegner's gramdomatosis                                                                                        
It is treated aggressively with glucocorticoids with or without cyclophosphamide or azathioprine