Crescent formation is characteristic of the following glomerular disease -
Minimal change disease
Rapidly progressive glomerulonephritis
Focal and segmental glomerulonephritis
Rapidly non progressive glomerulonephritis
Rapidly progressive glomerulonephritis (RPGN) is characterised by rapid loss of renal function over days to weeks, usually in association with hypeension and oedema. Non-visible haematuria is almost always present with variable amounts of proteinuria, while characteristic red cell casts and dysmorphic red cells may be observed on urine microscopy . Renal biopsy typically shows crescentic lesions , often associated with necrotising lesions within the glomerulus , paicularly in small-vessel vasculitides. This pattern of presentation is typical of post-infectious glomerulonephritis, anti-GBM disease and small-vessel vasculitides It can also be observed in SLE and occasionally in IgA and other nephropathies . Ref Harrison20th edition pg 292
Kidney