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) By default, however, filenames use the Segoe UI font, and the tone letter U+A789 is identical to the colon in this font, so it can be used in place of the colon. Several programming languages use the colon for various purposes. A number of programming languages, most notably Pascal and Ada, use a colon immediately followed by an equality sign (codice_1), in which case the colon and the equality sign are considering to compose to an independent "assignment sign"; this can be represented in Unicode as . Labels—targets for jumps, notably goto, but also some switch statements—are general formed of