[The colon examination (author's transl)]

The examination of the colon in its entirety is accomplished best and most economically by roentgenologically. The author stresses the two most common but separate methods for colon examinations: the full column method of low density barium sulfate suspension and the air contrast examination. The contraindications to the examination are discussed as well as the preparation for the examination, the drugs that are used, the equipment, plain films, the full column technique, the air contrast technique, barium suspensions, drainage of the rectum, other details, and an evaluation of selecting the best radiographic method. Also, discussed is the critical review of the radiograms, fluororscopy, and the high risk group of patients that should have a primary air contrast colon examination. This latter group of patients are those with the following findings: 1) rectal bleeding for any reason or a history of bleeding; 2) polyps on endoscopic examination; 3) previous history of polyps or carcinoma; 4) a strong family history of polyps or carcinoma; 5) patients over 40 years of age; 6) a change in bowel habits, weight loss, unexplained anemia, previous uretero-sigmoid anastomosis, long standing inflammatory bowel disease, hemoccult positive stools, or other signs, on the basis of which the clinician or radiologist should have an index of suspicion for carcinoma.