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Related Concept Videos

Endoscopic Procedures II: Colonoscopy01:25

Endoscopic Procedures II: Colonoscopy

200
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:
200
Endoscopic Procedures III: Video Capsule Endoscopy01:28

Endoscopic Procedures III: Video Capsule Endoscopy

348
Capsule endoscopy, or wireless or video capsule endoscopy, is a diagnostic procedure for examining the entire gastrointestinal tract. Patients swallow a capsule about the size of a vitamin tablet. The capsule is equipped with a transmitter, a battery, an LED light source, and a color video camera to capture images throughout the gastrointestinal tract. This procedure is particularly useful for diagnosing conditions such as Crohn's disease, ulcerative colitis, tumors, polyps, ulcers,...
348
Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

205
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...
205
Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

161
This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and...
161
Endoscopic Procedures I: Esophagogastroduodenoscopy01:29

Endoscopic Procedures I: Esophagogastroduodenoscopy

387
An Esophagogastroduodenoscopy (EGD) is a diagnostic procedure in which an endoscopist uses a flexible, lighted endoscope to visualize the upper gastrointestinal (GI) tract. The procedure includes visualizing the oropharynx, esophagus, stomach, and the first part of the small intestine, the duodenum.
During an EGD, the endoscope can be used to:
387
Appendicitis-II: Diagnostic Studies and Management01:29

Appendicitis-II: Diagnostic Studies and Management

153
Diagnosing and managing appendicitis requires a structured and comprehensive approach that spans from initial assessment to postoperative care. Here is an overview of the process:
Diagnosing Appendicitis
It requires a multifaceted approach, starting with a detailed physical examination to pinpoint the location and nature of the pain and identify any associated symptoms. Laboratory tests play a crucial role. A complete Blood Count (CBC) typically reveals leukocytosis (an increased number of...
153

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Related Experiment Video

Updated: Sep 28, 2025

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
03:43

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists

Published on: July 11, 2025

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Surveillance Recommendation for Colonoscopy after Polypectomy.

Charles Muller1, Vijaya L Rao2

  • 1Division of Gastroenterology & Hepatology, Northwestern Memorial Hospital, 259 East Erie, Suite 1600, Chicago, IL 60611, USA. Electronic address: https://twitter.com/cmmuller7.

Gastrointestinal Endoscopy Clinics of North America
|April 1, 2022
PubMed
Summary
This summary is machine-generated.

Colorectal cancer screening surveillance guidelines have been updated. Surveillance intervals for patients with low-risk adenomas after polypectomy are now extended, reflecting improved outcomes.

Keywords:
ColonoscopyPolypPolypectomySurveillance

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Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
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Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
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Area of Science:

  • Gastroenterology
  • Oncology
  • Preventive Medicine

Background:

  • Colorectal cancer (CRC) incidence and mortality have decreased due to enhanced screening, primarily colonoscopy.
  • Surveillance after colorectal polypectomy is crucial for preventing CRC recurrence and mortality.

Purpose of the Study:

  • To review updated evidence and outcomes for surveillance after colorectal polypectomy.
  • To highlight key modifications in the 2020 US Multi-Society Task Force on CRC surveillance guidelines.

Main Methods:

  • Review of current scientific literature and clinical guidelines.
  • Analysis of changes in recommended surveillance intervals post-polypectomy.

Main Results:

  • Updated guidelines extend surveillance intervals for patients with 1-2 low-risk adenomas (<10 mm) from 5-7 years to 7-10 years.
  • Surveillance intervals for patients with 3-4 low-risk adenomas are extended from 3 years to 3-5 years.

Conclusions:

  • The updated guidelines reflect a growing body of evidence supporting longer surveillance intervals.
  • These changes aim to optimize CRC surveillance strategies while maintaining patient safety and reducing healthcare burden.