Lower gastrointestinal series a familial history of polyps or colon cancer, although it is not uncommon for a barium enema to be done after a colonoscopy for further evaluation. Lower gastrointestinal series A lower gastrointestinal series is a medical procedure used to examine and diagnose problems with the human colon (large intestine). Radiographs (X-ray pictures) are taken while barium sulfate, a radiocontrast agent, fills the colon via an enema through the rectum. The term barium enema usually refers to a lower gastrointestinal series, although enteroclysis (an upper gastrointestinal series) is often called a small bowel barium enema. This test may be done in
Colon (punctuation) address colons (and one optional double colon) separate up to 8 groups of 16 bits in hexadecimal representation. In a URL a colon follows the initial scheme name (such as HTTP and FTP), and separates a port number from the hostname or IP address. In BASIC, it is used as a separator between the statements or instructions in a single line, which is represented in other languages via the semicolon. In Forth, a colon "precedes" definition of a new word. Haskell uses a colon (pronounced as "cons", short for "construct") as an operator to add an element to the front