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
Flea bitten appearance of the kidney is seen in 
Select and explain. 
A. Malignant hypeension, B. Benign hypeension, C. Chronic pyelonephritis, D. Diabetes mellitus
A: Malignant hypeension
Answer: A: Malignant hypeension 
Explanation: 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