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: Radiology
[{'content': 'Spider leg appearance is found in – \nSelect and explain. \nA. Polycystic kidney, B. Pyelonephritis, C. Hydronephrosis, D. Renal artery stenosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Spider leg appearance on IVP is seen in Polycystic kidney disease.', 'role': 'assistant'}]