Pathological changes of diabetic nephropathy are all except:

Diabetes may cause nodular and diffuse glomerulosclerosis but not focal glomerular sclerosis. Diabetes Mellitus - |ed glucose - non enzymatic glycosylation - Advanced glycation end products - efferent aeriole - |ed filtration injury - Nodular glomerulosclerosis ( most characteristic) : Kimmelstein Wilson lesion - diffused glomerulosclerosis ( |GFR )