Process quality and incidence of acute complications in a series of more than 230,000 outpatient colonoscopies.

Background And Study Aims: Data on process quality and complications of colonoscopies are sparse, especially for the screening setting. We describe process quality in routine care, estimate the incidence of acute complications, and identify risk indicators for substandard care and complications.

Patients And Methods: We analyzed data from 236 087 compulsory health insurance (CHI) members who underwent colonoscopies in 2006.

Characteristics of metachronous colorectal adenomas found during long-term follow-up: analysis of four subsequent generations of adenoma recurrence.

Objective: Because of the high recurrence rates of colorectal adenomas, regular surveillance by colonoscopy has been recommended, but there is still a dearth of information on the long-term results of follow-up colonoscopy after polypectomy. The aims of this study were to determine the differences between initial adenomas and metachronous lesions, to evaluate the effect of long-term surveillance and to describe the hypothetical origin of the colorectal adenoma-carcinoma sequence.

Material And Methods: Between 1978 and 2003 a total of 1091 patients undergoing periodic surveillance examinations were prospectively documented at the Erlangen Registry of Colorectal Polyps.

Risk of advanced metachronous colorectal adenoma during long-term follow-up.

Background: According to the adenoma-carcinoma concept, all colorectal adenomas are to be removed and all patients have to undergo regular surveillance examinations. But there is still shortage on information on the long-term results of follow-up colonoscopy after polypectomy.

Methods: Between 1978 and 2003, more than 20,000 polyps were prospectively documented at the Erlangen Registry of Colorectal Polyps.

Benefit-risk analysis of different risk-related surveillance schedules following colorectal polypectomy.

Background/aims: For colorectal screening patients a gain of life time was previously calculated to be about 30-50 days. Different recommendations for recognizing at-risk groups and defining surveillance intervals after an initial finding of colorectal adenomas have been published. However, no benefit-risk analysis regarding specific long-term effects of follow-up patients has been reported to date.

Follow-up after colorectal polypectomy: a benefit-risk analysis of German surveillance recommendations.

Objective: For colorectal screening patients a mean gain of life time was previously calculated of about 30-50 days. Different recommendations for recognising at-risk groups and defining surveillance intervals after an initial finding of colorectal adenomas have been published. However, no benefit-risk analysis regarding to specific long-term effects of follow-up has been reported to date.