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': 'A 50 year old female patient complains of difficulty in swallowing. Patient gives h/o multiple diagnostic CT-scans of the head and neck region. This patient may be predominantly susceptible to which of the following? \nSelect and explain. \nA. Medullary thyroid carcinoma, B. Follicular thyroid carcinoma, C. Anaplastic thyroid carcinoma, D. Papillary thyroid carcinoma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The incidence of thyroid carcinomas, predominantly\xa0papillary thyroid carcinomas, increases in humans after radiation exposure. There is strong dependence on age at exposure—susceptibility to radiation-induced thyroid cancer is higher in children than adults. There is little evidence for a dose response for individuals exposed during adulthood. Females are 2 to 3 times more susceptible than males to radiogenic and spontaneous thyroid cancers.\n\nReference: White and Pharoah, Oral radiology, ed 8th, pg-92', 'role': 'assistant'}]