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Esophageal Introitus (DV061)
Released:  January 2017
Viewing Time:  1 hour

This CME activity consists of the ASGE video, Esophageal Introitus, followed by a post-assessment and evaluation.

For gastrointestinal endoscopists and otolaryngologists, esophageal introitus (EI) is the arbitrary yet overlapping boundary. Many times, the term EI is used interchangeably with the pharyngoesophageal sphincter or upper esophageal sphincter. In this review, the authors broadened the definition of EI to cover the lower part of the hypopharynx posterior to the larynx, esophageal opening posterior to the cricoid prominence and between the bilateral pyriform fossae, and the cervical esophagus. Although much pathology can be observed within this region, careful and systemic examination of the EI is often not stressed enough during endoscopic training and practice. The authors demonstrate its anatomy, endoscopic findings and pathologies within EI and their management.    

See a preview of this video content here.

Target Audience

Practicing gastrointestinal endoscopists, gastroenterologists, gastroenterology fellows and trainees, medical residents, physician assistants and nurses.

Learning Objectives

Upon completion of this educational activity, participants will be able to:

• Identify normal endoscopic landmarks and findings within the EI.

• Diagnose common endoscopic findings such as gastric mucosa heterotopia, web, radiation stricture, cricopharyngeal bar, mucositis, foreign body impaction, etc.

• Identify and manage uncommon pathologies such as various types of diverticulum, pemphigus, pemphigoid, etc.


Video Release Date:    May 1, 2014
Online CME Release Date:  May 1, 2014
Most Recent CME Review Date: January 31, 2017
CME Expiration Date:   January 31, 2020

Expected Time of Activity Completion:  60 Minutes

Hardware/Software Requirements

Windows Requirements: Operating system: Windows 7+
Browser: Internet Explorer 8+, Firefox 10+, Google Chrome 10+
Internet connection: DSL, cable modem, or other high-speed connection
Flash: Adobe® Flash® Player 12+

Macintosh Requirements:
Operating system: Mac OS X 10.6.8+
Browser: Mozilla Firefox 10+, Safari 5+, Google Chrome 10+
Internet connection: DSL, cable modem, or other high-speed connection
Flash: Adobe® Flash® Player 12+


This CME activity consists of an ASGE video, followed by a post-assessment.  All materials required to complete the activity, including the video, are contained within the activity.

To complete this activity,
1. View the video.
2. Complete the Post –assessment by selecting the single best answer for each multiple choice question. You will be able to change your answer at any time until you click on the finish button.
3. Complete the Evaluation.

You may complete the activity in one sitting, or you may save your work in progress and complete it at a later date. However, to earn CME credits, you must complete the activity prior to the CME expiration date. 

In order to claim credit, you must complete the Post-assessment and Evaluation. Completed CME will be tracked in your account and you can print a record of this CME activity at any time. 

Contact Info

For technical difficulties, please contact ASGE between the hours of 8:30am and 5pm Central Time at 1-866-353-ASGE (2743). For questions related to content or CME credits, please email

Availability: On-Demand
Cost: Member: $25.00
Non-Member: $35.00
Credit Offered:
No Credit Offered
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