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': "In a lady with bilateral superior temporal quadrantopia, galactorrhea, the most probable cause is: \nSelect and explain. \nA. Pituitary macroadenoma, B. Craniopharyngioma, C. Sheehan's syndrome, D. Pituitary hypophysitis", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (Pituitary Macroadenoma): Presence of galactorrhea (hyperprolactinemia) and bitemporal superior quadrantopia (visual field defect) is consistent with a diagnosis of pituitary macroadenoma. Both non secretory pituitary Macroadenoma and prolactin secreting Macroadenoma (Large Prolactinoma) may produce the above manifestation.', 'role': 'assistant'}]