This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney disorders, Subject name: Pathology
Which of the following is not true about Berger's disease? 
Select and explain. 
A. The pathological changes are proliferative and usually confined to mesangial cells, B. Hematuria may be gross or microscopic, C. On immunofluorescence deposits contain with IgA and IgG, D. Absence of associated proteinuria is pathognomic
D: Absence of associated proteinuria is pathognomic
Answer: D: Absence of associated proteinuria is pathognomic 
Explanation: Berger's disease (IgA nephropathy) Frequent cause of gross or microscopic hematuria. Mild proteinuria is frequently present Occassionally nephrotic syndrome may develop.