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: Medicine
[{'content': 'A 40-year-old women presented with a CT scan of the head showing an enlarged sella tursica. Neurological and endocrine work up in detail were found to be normal. The most likely diagnosis is - \nSelect and explain. \nA. Prolactinoma, B. Chromophobe adenoma, C. Craniophobe, D. Empty sella syndrome', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]