Upper gastrointestinal series (or study), whereas the barium enema is called a lower gastrointestinal series (or study). In upper gastrointestinal series examinations, the barium sulfate is mixed with water and swallowed orally, whereas in the lower gastrointestinal series (barium enema), the barium contrast agent is administered as an enema through a small tube inserted into the rectum. Barium X-ray examinations are useful tools for the study of appearance and function of the parts of the gastrointestinal tract. They are used to diagnose and monitor esophageal reflux, dysphagia, hiatus hernia, strictures, diverticula, pyloric stenosis, gastritis, enteritis, volvulus, varices, ulcers, tumors, and gastrointestinal dysmotility, as
Colon (punctuation) Finnish "USA:n" and Swedish "USA:s" for the genitive case of "USA", Finnish "%:ssa" for the inessive case of "%", or Finnish "20:een" for the illative case of "20"). In Swedish, the colon is used in contractions, such as "S:t" for "Sankt" (Swedish for "Saint"), e.g. in the Stockholm metro station "S:t Eriksplan". This can even occur in people's names, for example ("" for "Axelson"). The colon was also used to mark abbreviations in early modern English. In Armenian, a colon indicates the end of a sentence, similar to a Latin full stop or period. The colon is also used as