<prompt> Most common type of lupus nephritisMemberanousMesangialFocal proliferativeDiffuse proliferatione  <response>: Diffuse proliferative nephritis DPN or glomerulonephritis DPGN is a type of glomerulonephritis that is the most serious form of renal lesions in SLE and is also the most common, occurring in 35 to 60 of patients. Most of the glomeruli show endothelial and mesangial proliferation affecting the entire glomerulus, leading to diffuse hypercellularity of the glomeruli, producing in some cases epithelial crescents that fill Bowmans space. Here in this diffuse proliferation of lupus nephritis is most common. Ref: emedicine.medscape.com 