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: Gynaecology & Obstetrics
[{'content': 'Which of the following tumors is not commonly known to increase size during in pregnancy ? \nSelect and explain. \nA. Glioma, B. Pituitary adenoma, C. Meningioma, D. Neurofibroma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Let us have a look at each option one by one\nPituitary adenoma (option b): Enlargement of both microadenomas and macroadenomas (> 10 mm) is seen during pregnancy, less in case of microadenoma and more in case of macroadenoma.\nWilliams 23/e, p 1140\n“Neurofibromas and meningiomas although brain tumors are not specifically related to gestation, meningiomas, angiomas and neurofibromas are thought to grow more rapidly with pregnancy.”\nCOGDT 10/e, p 398\n“Lesions of neurofibromatosis may increase in size and in number as a result of pregnancy.”\nWilliams 23/e, p 1191\nI did not get any text specifically mentioning the relationship between glioma and pregnancy but by exclusion the answer is Glioma.', 'role': 'assistant'}]