<prompt> Tram track appearance is seen in which of the following conditions: March 2013IgA nephropathyRPGNMembranoproliferative glomerulonephritisMembranous glomerulonephritis  <response>: Ans. C i.e. Membranoproliferative glomerulonephritis Membranoproliferative glomerulonephritis MPGN Mesangiocapillary glomerulonephritis, It is a type of glomerulonephritis caused by deposits in the kidney glomerular mesangium and basement membrane GBM thickening, activating complement and damaging the glomeruli. MPGN accounts for approximately 4 of primary renal causes of nephritic syndrome in children and 7 in adults. It should not be confused with membranous glomerulonephritis, a condition in where the basement membrane is thickened, but the mesangium is not. The GBM is rebuilt on top of the deposits, causing a tram tracking appearance under the microscope. Mesangial cellularity is increased. 