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: Radiology
[{'content': 'X-rays showing widening of sella but neurological and endocrinological investigations are normal, diagnosis is \nSelect and explain. \nA. Pseudotumor cerebri, B. Empty sella sign, C. Chromophobe adenoma, D. Prolactinoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is\'a\'i.e., Pseudotumor cerebriRef: Principles and Practice of Endocrinology and Metabolism p. 107"Elevated intracranial pressure is a potentially impoant contributory factor because it has been documented in patients with primary empty sella syndrome.Ten percent of the patients with benign intracranial hypeension have a co-existing empty sella."', 'role': 'assistant'}]