This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Pathology
[{'content': 'Hall mark of the IgA nephropathy is \nSelect and explain. \nA. Oedema, B. Hematuria, C. Hypertension, D. Proteinuria', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (Hematuria) (698 - H M) (524- R) (555- Basic pathology 8th)IgA - Nephropathy - usually characterized by recurrent bouts of haematuria* Mild proteinuria is usually present and occasionally nephrotic syndrome may develop* IgA nephropathy is one of the most common cause of recurrent or gross hematuria and is the most common glomerular disease worldwide* The pathogenic hall mark is the deposition of IgA in the mesangium', 'role': 'assistant'}]