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Related Concept Videos

Endoscopic Procedures I: Esophagogastroduodenoscopy01:29

Endoscopic Procedures I: Esophagogastroduodenoscopy

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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.
During an EGD, the endoscope can be used to:
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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 IV: Sigmoidoscopy and Laproscopy01:26

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

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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.
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...
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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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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 Studies I: Bronchoscopy and Thoracoscopy01:30

Endoscopic Studies I: Bronchoscopy and Thoracoscopy

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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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Related Experiment Video

Updated: Aug 14, 2025

Author Spotlight: Advancing Biopsy Techniques with Transesophageal Ultrasound
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Third-space endoscopy: the final frontier.

Maham Hayat1, Dennis Yang1, Peter V Draganov2

  • 1Center for Interventional Endoscopy, AdventHealth, Orlando, FL, USA.

Gastroenterology Report
|January 12, 2023
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Summary
This summary is machine-generated.

Third-space endoscopy (TSE) procedures, like per-oral endoscopic myotomy (POEM), leverage submucosal tunneling for minimally invasive treatments. This review explores the expanding applications and future of TSE interventions.

Keywords:
endoscopyfinal frontiersubmucosal endoscopytherapeutic endoscopythird-space endoscopy

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Area of Science:

  • Gastroenterology
  • Endoscopy
  • Minimally Invasive Surgery

Background:

  • Endoscopic submucosal dissection (ESD) experience has advanced submucosal (
  • third space
  • ) techniques.
  • Per-oral endoscopic myotomy (POEM) pioneered third-space endoscopy (TSE).

Purpose of the Study:

  • To review the current status of third-space endoscopy (TSE) interventions.
  • To discuss future directions for TSE procedures.

Main Methods:

  • Review of existing literature on third-space endoscopy (TSE).
  • Analysis of the evolution and applications of TSE procedures, starting with POEM.

Main Results:

  • POEM demonstrated the feasibility and utility of submucosal tunneling for esophagogastric myotomy.
  • TSE has evolved from a novel concept to a field with diverse clinical applications.

Conclusions:

  • Third-space endoscopy (TSE) represents a significant advancement in endoscopic interventions.
  • The field of TSE is expanding, with numerous potential future applications and interventions.