and the AWMF, representing the DGVS and the DKG Bibliography DOI http://dx.

Klassifikation der Konsensusstärke starker Konsens Zustimmung von > 95 % der Teilnehmer Konsens Zustimmung von > 75 -90 % der Teilnehmer mehrheitliche Zustimmung Zustimmung von > 50 -75 % der Teilnehmer kein Konsens Zustimmung von < 50 % der Teilnehmer

This study supports the view that complete endoscopic polypectomy is an adequate therapy for low-risk carcinoma: A modification of the follow-up regimen, with less frequent endoscopic controls, is justified.

In April, 1978, we carried out a survey covering 27 hospitals, in which colonoscopy is performed on a routine basis. With respect to the size of the hospital, the equipment available and the level of training of the examiner, this selection may be regarded as representative. A total of 35,892 colonoscopies, 7,365 polypectomies, 58 electrocoagulations and 14 rugectomies were analysed with respect to the nature, localization and treatment of any complications that arose. The rate of complications seen in diagnostic colonoscopy was 0.008% for bleeding and 0.14% for perforation, the mortality rate being 0.02%. As expected, the complication rate for colonoscopic polypectomy was higher. Bleedings were reported in 2.24%, perforations in 0.34% and deaths in 0.1% of the examinations. Of particular importance would seem to be the possibilities of preventing complications. It was shown on the basis of the survey that a good, standardized training of the endoscopist, the strict observance of the contraindications, the non-use of analgesics and general anaesthesia, fluoroscopic control of "difficult" colons and the use of the best instruments and aids presently available, reduce the complication rate to a minimum.

No abstract

Using magnetic three-dimensional imaging systems, the position of the colonoscope, the detection and observation of loops during straightening, and localization of pathological findings can be accurately achieved. Modification of the prototype led to satisfactory improvement in all parameters tested.

To investigate the factors influencing the malignant potential of adenomas, a logit analysis was carried out. The malignancy rate (frequency of malignant areas infiltrating into submucosa) in adenomas is influenced by 1. the size of the adenoma, 2. the interrelationship between size and histological type (tubular, tubulo-villous, villous) and 3. the macroscopic growth pattern (pedunculated, semipedunculated, sessile). No influence is exercised by the number of adenomas, their localization, or the sex of the patient.

No abstract