This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Surgery, Subject name: Surgery
[{'content': 'The following is a thyroid scan. The most probable diagnosis can be: \nSelect and explain. \nA. Papillary carcinoma thyroid, B. Lateral aberrant thyroid, C. Hypersecreting adenoma, D. Graves disease', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The given thyroid scan is showing increased focal uptake in the Rt upper lobe of thyroid & decreased uptake in the rest of the thyroid gland, this is suggestive of hypersecreting thyroid adenoma. There is no ectopic thyroid tissue, so lateral aberrant thyroid & lateral extension is ruled out. Malignancy ruled out as there is no cold nodule.', 'role': 'assistant'}]