[Importance of coloncontrast enema]

Screening for colorectal cancer starts with digital exploration of the rectum and was extended in 1977 using the haemoccult test. It was referred to detect 24% of malignancies, but with a high number of false positive findings. Combination of regular follow up examinations and coloscopy reached a sensitivity of 80%. International studies demonstrated the need of a complete colon examination, so that the coloscopy is actually an important screening method in Germany. The coloncontrast examination is a safe, cost-effective method with a low complication rate. It is suitable especially for patients, in which the colonoscopic evaluation of the colon was not complete and provides additional morphological informations in many cases.