This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Surgery
[{'content': 'Patient come with a midline swelling in the neck measuring 2cms in size On H P E it shows orphan annie eye nuclei Most likely diagnosis \nSelect and explain. \nA. Papillary thyroid ca, B. medullary thyroid ca, C. Toxic nodular goitre, D. Follicular thyroid Ca', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Orphan Annie eyed nuclei are characteristic histopathological feature of PTC ref : bailey and love 27th ed', 'role': 'assistant'}]