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': 'Warthins tumour is - \nSelect and explain. \nA. Malignant neoplasm, B. Rapidly growing, C. Gives a hot pertechnetate scan, D. Cold pertechnetate scan', 'role': 'user'}, {'content': 'Answer: C \nExplanation: "Warthin\'s tumor, or papillary cystadenoma lymphomatosum, is the second most common benign parotid tumor and occurs most often in older white men. Because of the high mitochondrial content within oncocytes, the oncocyte-rich Warthin tumor and oncocytomas will incorporate technetium Tc 99m and appear as hot spots on radionuclide scans. If fine-needle aspiration suggests a slow-growing Warthin tumor with confirmatory technetium scanning in a patient with contraindications to surgery, the tumor may be closely monitored because it has no malignant potential." -Sabiston', 'role': 'assistant'}]