<prompt> Effacement of foot processes is pathognomic OF which diseaseminimal change diseaseStenoid resistant glomerulonephritisMembranous glomerulonephritisIgA nephropathy  <response>: In minimal change disease histopathology is normal while electron microscopy is pathognromic which shows loss or effacement of podocyte foot processes REF : ROBBINS 10TH ED 