This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
In an adult Unilateral smooth contracted kidney with hypeension is seen in - 
Select and explain. 
A. Stenosis of renal aer, B. Chr. GN, C. Renal cell CA, D. Pyelonephritis
A: Stenosis of renal aer
Answer: A: Stenosis of renal aer 
Explanation: Ans. is 'a' i.e., Stenosis of renal aeryAmongst the given options only stenosis of renal aery results in smooth contracted kidney :?o Unilateral renal aery stenosis is relatively uncommon cause of hypeension (2.5% of cases) kidney shows diffuse ischemic atrophy, reduced size.o Chronic GN - kidney is symmetrically contracted and has diffusely granular (not smooth) coical surface. o Pyelonephritis (chronic) - Kidneys are irregularly scarred.o Renal Cell Ca - No smoothness, irrugular surface of kidney is seen.