This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urogenital system, Subject name: Radiology
All are the radiological sings of Urogenital TB Except 
Select and explain. 
A. "Smudeged Papillae" and "Moth eaten Calyx", B. "Putty Kidney", C. "Saw tooth Ureter", D. "Enlarged Bladder'
D: "Enlarged Bladder'
Answer: D: "Enlarged Bladder' 
Explanation: SIGNS OF UROGENITAL TB: Smudged" papillae= irregularities of the surface of papillae "Moth-eaten" calyx=caliceal erosion (early change) "Putty kidney" "Saw-tooth ureter", "beaded ureter"= alternating areas of strictures +dilatations "Corkscrew ureter"= marked touosity with strictures+dilatations "Pipestem ureter"= rigid a peristaltic sho thick "Shrunken /thimble bladder"