<prompt> A 50 year old female patient complains of difficulty in swallowing. Patient gives ho multiple diagnostic CT-scans of the head and neck region. This patient may be predominantly susceptible to which of the following?Medullary thyroid carcinomaFollicular thyroid carcinomaAnaplastic thyroid carcinomaPapillary thyroid carcinoma  <response>: The incidence of thyroid carcinomas, predominantly papillary thyroid carcinomas, increases in humans after radiation exposure. There is strong dependence on age at exposuresusceptibility 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.Reference: White and Pharoah, Oral radiology, ed 8th, pg-92 