“…Na + /K -ATPase pump provides energy for this transport system [21] . Interestingly, NIS was demonstrated to be expressed in various normal non-thyroid tissues including salivary glands, lacrimal glands, breasts, stomach, intestine, lungs, and kidneys [22,23] . This finding may be associated with both the early/short-term and late/long-term side effects of RIT, including sialadenitis, xerostomia, gastritis, nausea/vomiting, dental caries, taste dysfunction, dry eye, and pulmonary fibrosis.…”