Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Endoscopic Procedures II: Colonoscopy01:25

Endoscopic Procedures II: Colonoscopy

178
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:
178
Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

138
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...
138
Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

157
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...
157
Assessment of the Rectum and Anus01:25

Assessment of the Rectum and Anus

373
Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
373

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Individualizing Treatment in IBS-C Management: The Key to Improving and Maintaining Successful Outcomes.

Gastroenterology & hepatology·2026
Same author

Real-World Evidence of the Long-Term Clinical Utility of a Vibrating Capsule in the Management of Chronic Idiopathic Constipation.

Clinical and translational gastroenterology·2025
Same author

Stable single-site organonickel catalyst preferentially hydrogenolyses branched polyolefin C-C bonds.

Nature chemistry·2025
Same author

Rapid Polyolefin Hydrogenolysis by a Single-Site Organo-Tantalum Catalyst on a Super-Acidic Support: Structure and Mechanism.

Angewandte Chemie (International ed. in English)·2023
Same author

Single-Site Carbon-Supported Metal-Oxo Complexes in Heterogeneous Catalysis: Structure, Reactivity, and Mechanism.

Angewandte Chemie (International ed. in English)·2023
Same author

Benefit of Surgical Treatment for Management of Uncomplicated, Recurring Small Bowel Diverticulitis.

The American surgeon·2023

Related Experiment Video

Updated: Sep 2, 2025

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
15:49

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

Published on: October 16, 2013

31.9K

Accuracy and Inter-observer Agreement Among Endoscopists for Visual Identification of Colorectal Polyps Using

Thi Khuc1,2, Amol Agarwal3,4, Feng Li3

  • 1Institute for Digestive Health and Liver Disease, Mercy Medical Center, Baltimore, MD, USA. tkhuc@mdmercy.com.

Digestive Diseases and Sciences
|August 10, 2022
PubMed
Summary

Accurately distinguishing small colon polyps like hyperplastic polyps (HP), sessile serrated lesions (SSL), and traditional adenomas (TA) via endoscopy is challenging. Endoscopists showed poor accuracy and agreement, regardless of polyp size or location information.

Keywords:
Endoscopic identificationHyperplastic polypsSessile serrated lesionsTubular adenomaVisual accuracy

More Related Videos

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

131
Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation
09:42

Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation

Published on: August 26, 2014

18.8K

Related Experiment Videos

Last Updated: Sep 2, 2025

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
15:49

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

Published on: October 16, 2013

31.9K
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

131
Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation
09:42

Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation

Published on: August 26, 2014

18.8K

Area of Science:

  • Gastroenterology
  • Endoscopic diagnostics
  • Colorectal polyp classification

Background:

  • Accurate differentiation of small hyperplastic polyps (HP) from sessile serrated lesions (SSL) and traditional adenomas (TA) is crucial for appropriate patient management.
  • Endoscopic visual assessment is the primary method for polyp characterization, but accuracy can be limited, especially for diminutive lesions.

Purpose of the Study:

  • To evaluate the diagnostic accuracy and inter-observer agreement among endoscopists in distinguishing between small HPs, SSLs, and TAs based solely on endoscopic appearance.
  • To assess the impact of providing polyp size and location information on diagnostic accuracy and inter-observer agreement.

Main Methods:

  • Seven endoscopists reviewed high-quality endoscopic images of 30 small HPs, SSLs, and TAs on two separate occasions.
  • Image sets were presented with and without information on polyp size and location.
  • Participants identified polyp type, graded confidence, and inter-observer agreement was calculated using Kappa statistics.

Main Results:

  • Overall accuracy was higher when polyp size and location were provided (67.1% for TAs, 50.0% for SSLs, 41.4% for HPs) compared to when withheld (60%, 44.3%, 34.3% respectively).
  • Inter-observer agreement was moderate for TAs (κ=0.50) and fair for SSLs (κ=0.26) and HPs (κ=0.29), decreasing when size/location data was omitted.
  • Endoscopists with more experience (≥10 years) showed marginally higher accuracy for SSL diagnosis.

Conclusions:

  • The endoscopic differentiation of small TAs, SSLs, and HPs based on visual appearance alone is generally poor.
  • Providing information on polyp size and location improves diagnostic accuracy but does not fully resolve the diagnostic challenge.
  • Further advancements in endoscopic imaging or adjunct technologies may be needed to enhance the reliable classification of small colorectal polyps.