This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genito Urinary System, Subject name: Radiology
Which of the following is not evaluated using 99mm Tc- DMSA scintigraphy? 
Select and explain. 
A. Renal anomalies, B. Renal pseudomass, C. Renal scarring, D. Renal artery stenosis
D: Renal artery stenosis
Answer: D: Renal artery stenosis 
Explanation: Ans DDMSA scan is used to study renal morphology thus out of given options only renal artery stenosis is not a renal morphological defect. Renal artery stenosis is studied by Captopril-DTPA scan