<prompt> IgA deposition in mesangial cells arr seen inGood Pasteur syndromeBerger syndromeCresentic glomerulonephritisAlpo syndrome  <response>: Refer Robbins page no 923 IgA Nephropathy Berger Disease IgA nephropathy, characterized by the presence of prom- inent IgA deposits in the mesangial regions and recurrent hematuria, is the most common type of glomerulonephri- tis worldwide. The disease can be suspected by light microscopic examination, but the diagnosis is made only by the detection of glomerular IgA deposition Fig. 20-19. Mild proteinuria is usually present, and the nephrotic syndrome may occasionally develop. 