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: Surgery
[{'content': "Neuroblastoma differs from Wilm's tumor radiologically by all except \nSelect and explain. \nA. Calcification, B. Aorta and IVC are not eroded but pushed aside, C. Same location, D. Intraspinal extension of tumor", 'role': 'user'}, {'content': "Answer: C \nExplanation: The following are the differentiating feature b/w Neuroblastoma & Wilm's tumor.\n\nCalcification\n\nThere are foci of calcifications visible in neuroblastoma (about 85%) which are generally less common and less prominent in Wilm's tumor (less than 15%).\n\nIntraspinal extension\n\nThe intraspinal extension is seen in neuroblastoma, not in Wilm's tumor.\n\nAorta & WC invasion\n\nWilm's tumor invades Aorta and IVC. Whereas Neuroblastoma does not invade these structures.\n\nLocation\n\nWilm's tumor and neuroblastom can be differentiated on location too. C.T. findings will confirm the intrarenal location of Wilm's. Whereas Neuroblastoma will be seen above the kidney pushing it downwards & outwards.\n\nCrossing midline\n\nWilm's tumor\nor are typically confined to one side of the abdomen, whereas neuroblastomas usually cross the midline.", 'role': 'assistant'}]