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Related Concept Videos

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

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Sigmoidoscopy and laparoscopy are distinct medical procedures that enable physicians to internally inspect different parts of the GI tract. Although they serve different purposes, each is essential for diagnosing and, in some cases, treating various medical conditions.
Sigmoidoscopy
Sigmoidoscopy is a diagnostic procedure that uses a flexible sigmoidoscope equipped with a light source and camera to examine the rectum and sigmoid colon. The procedure involves inserting the tube through the anus...
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Endoscopic Procedures II: Colonoscopy01:25

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The colon, or large intestine, is the final segment of the digestive system. Its primary functions include absorbing water and vitamins produced by gut bacteria and transforming waste from liquid to solid to form stool. In adults, the large intestine is approximately 5 feet long and consists of four main sections:
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Updated: Sep 28, 2025

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
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Declining Colectomy Rates for Nonmalignant Colorectal Polyps in a Large, Ethnically Diverse, Community-Based

Asim Alam1, Christopher Ma2, Sheng-Fang Jiang3

  • 1Internal Medicine/Preventive Medicine Residency Program, Kaiser Permanente San Francisco Medical Center, San Francisco, California, USA.

Clinical and Translational Gastroenterology
|March 29, 2022
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Summary
This summary is machine-generated.

Colectomy rates for nonmalignant colorectal polyps significantly decreased from 2008 to 2018 in a large US healthcare system. This decline is likely due to advanced endoscopy centers and improved colorectal cancer screening programs.

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Area of Science:

  • Gastroenterology
  • Colorectal Surgery
  • Public Health

Background:

  • Colectomy rates for nonmalignant colorectal polyps have been increasing in the US and Europe.
  • Endoscopic resection offers improved safety, efficacy, and cost-effectiveness for nonmalignant polyps.

Purpose of the Study:

  • To investigate trends in colectomy rates for nonmalignant colorectal polyps within a large, integrated healthcare system.
  • To determine if colectomy rates are increasing or declining despite advanced endoscopic resection availability.

Main Methods:

  • Retrospective cohort study of 229,730 patients aged 50-85 undergoing colonoscopy (2008-2018).
  • Identified patients diagnosed with nonmalignant colorectal polyps and those undergoing colectomy within 12 months.
  • Calculated annual colectomy rates and stratified by age, sex, and race/ethnicity; tested for linear trend using Cochran-Armitage test.

Main Results:

  • Colectomy rates for nonmalignant colorectal polyps significantly decreased from 125 to 12 per 10,000 patients between 2008 and 2018 (P < 0.001).
  • Declines were observed across all age, sex, and race/ethnicity strata.
  • 1,611 colectomies were performed for nonmalignant polyps among 229,730 patients.

Conclusions:

  • Colectomy rates for nonmalignant colorectal polyps have significantly declined in a large, diverse US population over the past decade.
  • The decrease is likely attributed to the establishment of advanced endoscopy centers, enhanced care coordination, and organized colorectal cancer screening programs.