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Related Concept Videos

Endoscopic Procedures III: Video Capsule Endoscopy01:28

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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,...
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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.
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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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Endoscopic Procedures I: Esophagogastroduodenoscopy01:29

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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.
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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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Related Experiment Video

Updated: Apr 6, 2026

Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation
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Toward an easier indigocarmine chromoendoscopy.

Maximilien Barret1, Marine Camus1, Sarah Leblanc1

  • 1Maximilien Barret, Marine Camus, Sarah Leblanc, Romain Coriat, Frédéric Prat, Stanislas Chaussade, Gastroenterology Department, Cochin Hospital, 75014 Paris, France.

World Journal of Gastrointestinal Endoscopy
|July 21, 2015
PubMed
Summary

Indigo carmine chromoendoscopy, used for colon cancer screening, can be performed faster and easier without a spraying catheter. Dye administered through the air/water channel improves colonic lesion detection and adenoma detection rates.

Keywords:
Adenoma detection rateChromoendoscopyColonoscopyColorectal cancer screeningIndigocarmine

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Area of Science:

  • Gastroenterology
  • Endoscopy
  • Colorectal Cancer Screening

Background:

  • Indigocarmine chromoendoscopy enhances colonic lesion detection and adenoma detection rates during screening colonoscopy.
  • It aids in delineating and characterizing colorectal neoplasms.
  • Traditional methods often require a spraying catheter, which impedes endoscope suction and is time-consuming.

Purpose of the Study:

  • To assess the feasibility of performing indigocarmine chromoendoscopy without a spraying catheter.
  • To evaluate a simplified dye administration technique via the air/water channel.

Main Methods:

  • Indigocarmine dye was administered through the endoscope's air/water channel during colonoscopy.
  • The suction channel remained unobstructed, allowing for air exsufflation and immediate dye elimination.
  • The procedure was tested with various colonoscopes and cap-assisted colonoscopy.

Main Results:

  • This modified technique allows for uniform staining of the colonic walls.
  • The method proved feasible, easier, and quicker to perform compared to traditional spraying catheter use.
  • It preserves the endoscope's suction capacity.

Conclusions:

  • Administering indigocarmine dye via the air/water channel is a feasible and efficient alternative.
  • This simplified approach enhances the practicality of chromoendoscopy for colorectal cancer screening.
  • It may reduce procedure time and improve the colonoscopy experience.