This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
Effacement of foot processes is pathognomic OF which disease 
Select and explain. 
A. minimal change disease, B. Stenoid resistant glomerulonephritis, C. Membranous glomerulonephritis, D. IgA nephropathy
A: minimal change disease
Answer: A: minimal change disease 
Explanation: 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