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
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 - 
Select and explain. 
A. Prolactinoma, B. Chromophobe adenoma, C. Craniophobe, D. Empty sella syndrome
D: Empty sella syndrome
Answer: D: Empty sella syndrome 
Explanation: None