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
[{'content': 'Spider-leg sign on IVP is suggestive of: March 2010 \nSelect and explain. \nA. Pyelonephritis, B. Renal aery stenosis, C. Polycystic kidney disease, D. Bilateral hydronephrosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: Polycystic kidney disease Polycystic Kidneys Bilateral renal swelling in a man with or without dragging pain in the loin Hematuria Uremia Urine: Low specific gravity with albumin and a few casts IVP: Attenuated and elongated (spider leg) calyces with terminal clubbing or cupping.', 'role': 'assistant'}]