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Related Concept Videos

Endoscopic Procedures II: Colonoscopy01:25

Endoscopic Procedures II: Colonoscopy

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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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Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

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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.
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Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

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This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
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Endoscopic Studies I: Bronchoscopy and Thoracoscopy01:30

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Endoscopy is a non-surgical medical technique used to examine a person's internal organs and vessels. This lesson will focus on two types of endoscopic studies: bronchoscopy and thoracoscopy.
Bronchoscopy
Description
Bronchoscopy is a procedure that involves direct visualization of the larynx, trachea, and bronchi for diagnostic and therapeutic purposes. A flexible fiber optic or rigid bronchoscope is used to carry out the procedure. The fiber-optic bronchoscope is more frequently used due...
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Endoscopic Procedures V: ERCP01:26

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Endoscopic Retrograde Cholangiopancreatography (ERCP) is a diagnostic procedure that combines endoscopy and fluoroscopy to diagnose and treat conditions related to the bile ducts, pancreatic ducts, and gallbladder. This procedure is beneficial for identifying and addressing blockages, gallstones, strictures, and tumors within the biliary or pancreatic systems. ERCP is both diagnostic and therapeutic, offering the ability to visualize and treat identified problems in one session.
Patient...
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Lower GI Series: Barium Enema01:23

Lower GI Series: Barium Enema

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A Barium Enema, or a lower GI series, is a specialized radiographic examination designed to visualize the lower gastrointestinal tract, specifically the colon and rectum. This procedure is instrumental in diagnosing various conditions such as colorectal cancer, polyps, diverticulosis, and inflammatory bowel disease.
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Updated: May 2, 2026

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
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Colonoscopy utilization and outcomes 2000 to 2011.

David A Lieberman1, J Lucas Williams1, Jennifer L Holub1

  • 1Division of Gastroenterology, Oregon Health & Science University, Portland, Oregon.

Gastrointestinal Endoscopy
|February 26, 2014
PubMed
Summary
This summary is machine-generated.

Colonoscopy use for cancer screening increased threefold from 2000-2011. Large polyps are more common in older individuals and Black populations, with a shift towards proximal locations, impacting screening strategies.

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Area of Science:

  • Gastroenterology
  • Preventive Medicine
  • Public Health

Background:

  • Understanding colonoscopy's effectiveness is crucial for optimizing its use.
  • Trends in colonoscopy utilization and outcomes inform clinical practice and resource allocation.

Purpose of the Study:

  • To analyze trends in colonoscopy utilization and outcomes in the United States between 2000 and 2011.
  • To identify demographic and age-related patterns in colonoscopy indications and findings.

Main Methods:

  • Prospective collection of colonoscopy data from 84 diverse adult gastrointestinal practices.
  • Analysis of 1,372,838 colonoscopy reports from adult patients undergoing the procedure for any reason.
  • Focus on identifying large polyps (>9 mm) or suspected malignant tumors as primary outcomes.

Main Results:

  • Colonoscopy for average-risk screening increased nearly threefold from 2000-2011.
  • Indications varied by age: symptom evaluation for younger adults, screening for ages 50-74, and surveillance for older adults.
  • Large polyp prevalence increased with age and was higher in men; proximal polyp location was more common in older individuals and the Black population.

Conclusions:

  • Colonoscopy utilization shifted towards increased primary screening between 2000 and 2011.
  • The higher prevalence of proximal large polyps in the Black population and with advancing age necessitates tailored screening and surveillance strategies.
  • Findings highlight the evolving role of colonoscopy in cancer prevention and management.