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Related Concept Videos

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

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

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 solid...
Endoscopic Procedures II: Colonoscopy01:25

Endoscopic Procedures II: Colonoscopy

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:
Assessment of the Rectum and Anus01:25

Assessment of the Rectum and Anus

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.
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Diverticular Disease of the Colon01:27

Diverticular Disease of the Colon

Diverticular disease involves the formation of diverticula—small sac-like outpouchings of the colonic wall—and their complications. It most commonly affects the sigmoid colon due to higher intraluminal pressure and structural vulnerability. It results from structural weakness and increased pressure in the colon, producing pseudodiverticula that may remain silent or progress to inflammation and serious complications.Structure of DiverticulaIn diverticulosis, these outpouchings are...
Lower GI Series: Barium Enema01:23

Lower GI Series: Barium Enema

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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The examination begins by inserting a lubricated rectal tube into the patient's rectum to administer a radiopaque barium solution. The barium flow is carefully...
Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

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
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Updated: Jun 6, 2026

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

Flat colon polyps: what should radiologists know?

A Ignjatovic1, D Burling, R Ilangovan

  • 1Intestinal Imaging Centre, St Mark's Hospital, Harrow, Middlesex, UK.

Clinical Radiology
|November 13, 2010
PubMed
Summary
This summary is machine-generated.

Radiologists should focus on flat polyps, including adenomas and hyperplastic polyps, for accurate colorectal cancer screening. Standardized reporting of flat polyp morphology and size is crucial for effective patient management in CT colonography.

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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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Published on: October 16, 2013

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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

Area of Science:

  • Gastroenterology
  • Radiology
  • Oncology

Background:

  • International standards for computed tomography (CT) colonography have been published to enhance examination quality.
  • Flat polyps, encompassing adenomas and hyperplastic polyps, play a significant role in colorectal cancer development.
  • There is a growing integration of CT colonography with endoscopy for colorectal cancer detection.

Purpose of the Study:

  • To inform radiologists about the importance of flat polyps in colorectal cancer pathways.
  • To review existing flat polyp classification systems.
  • To propose standardized reporting methods for flat polyps based on morphology and size.

Main Methods:

  • Literature review of CT colonography standards and flat polyp classification.
  • Analysis of the significance of flat polyps in colorectal cancer.
  • Development of recommendations for reporting flat polyp characteristics.

Main Results:

  • Flat polyps require specific attention due to their role in colorectal cancer.
  • Current classification systems for flat polyps vary.
  • Standardized reporting incorporating morphology and size is essential for consistent patient management.

Conclusions:

  • Consistent and detailed reporting of flat polyps in CT colonography is vital.
  • Accurate characterization of flat polyps aids in appropriate patient management strategies.
  • Standardization will improve the synergy between CT colonography and endoscopic procedures.