Lower gastrointestinal series 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 a hospital or clinic. The patient lies on the X-ray table and a preliminary X-ray is taken. The patient is then asked to lie on the
American Society of Colon and Rectal Surgeons Accreditation Program for Rectal Cancer. American Society of Colon and Rectal Surgeons The American Society of Colon and Rectal Surgeons (ASCRS), formerly the American Proctologic Society, is a professional society for surgeons specializing in colorectal surgery. It is one of the older surgical societies, having been established in 1899. The organization was established as the American Proctologic Society in 1899, at a meeting held in Columbus, Ohio: The name of the organization was changed to American Society of Colon and Rectal Surgeons in 1973 "to indicate more clearly the scope of its specialty". The ASCRS has described its activities as