This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary tract, Subject name: Pathology
[{'content': 'Flea bitten appearance of the kidney is seen in \nSelect and explain. \nA. Malignant hypeension, B. Benign hypeension, C. Chronic pyelonephritis, D. Diabetes mellitus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Refer Robbins page no 9/e 939The kidney size varies depending on the duration and severity of the hypeensive disease. Small, pinpoint petechial hemor- rhages may appear on the coical surface from rupture of aerioles or glomerular capillaries, giving the kidney a peculiar "flea-bitten" appearance. Two histologic alterations characterize blood vessels in malignant hypeension', 'role': 'assistant'}]