Can ENT Perform Upper Endoscopy?
Yes, otolaryngologists (ENT surgeons) can and do perform upper endoscopy, particularly transnasal esophagoscopy (TNE), which provides superior visualization of the pharynx and upper esophagus compared to traditional esophagogastroduodenoscopy (EGD) performed by gastroenterologists.
Scope of Practice and Training
ENT surgeons have increasingly incorporated flexible esophagoscopy into their practice over the past few decades. More than three-quarters of otolaryngology residency programs currently include flexible esophagoscopy training 1. Among otolaryngologists who graduated after 1990,43% received formal training in flexible esophagoscopy during residency, representing a significant increase from earlier cohorts where only 21.3% received such training 1.
Types of Endoscopy Performed by ENT
Transnasal Esophagoscopy (TNE)
ENT surgeons primarily perform TNE, which offers distinct advantages:
- Superior visualization above the cricopharyngeus muscle - an area poorly visualized by traditional EGD 2
- Can be performed unsedated in the office setting as a day-case procedure 2, 3
- Better navigates anatomical and functional limitations common in head and neck cancer patients 3
- A normal EGD does not preclude positive findings on TNE due to superior pharyngeal and upper esophageal visualization 2
Rigid Esophagoscopy
ENT surgeons continue to use rigid esophagoscopy, particularly for:
- Foreign body removal - 84% of otolaryngologists use rigid esophagoscopy for this purpose 1
- Nearly 70% of ENT surgeons are either primarily responsible for esophageal foreign body management or share this responsibility with gastroenterology 1
Common Indications for ENT-Performed Endoscopy
The most frequent indications include 1:
- Evaluation of dysphagia
- Screening for complications of laryngopharyngeal reflux
- Panendoscopy for head and neck cancer surveillance
- Screening for synchronous and metachronous primaries in head and neck cancer patients 3
- Office-based therapeutic procedures 3
Clinical Context and Limitations
What ENT Does NOT Typically Do
While ENT surgeons perform upper esophagoscopy, they do not routinely perform complete esophagogastroduodenoscopy (EGD) extending into the stomach and duodenum. The guidelines provided [4-4] regarding GERD evaluation, Barrett's esophagus screening, and gastric/duodenal pathology are directed at gastroenterologists, not otolaryngologists.
Appropriate Referral Patterns
When patients require evaluation beyond the pharynx and upper esophagus—particularly for:
- GERD with alarm symptoms (dysphagia, bleeding, anemia, weight loss, recurrent vomiting) 4
- Failed PPI therapy after 4-8 weeks 4
- Barrett's esophagus screening or surveillance 4
- Gastric or duodenal pathology
Referral to gastroenterology for complete EGD is appropriate 4.
Practical Implementation
ENT-performed endoscopy has been successfully implemented in both teaching hospitals and district general hospitals 2. The procedure can be conducted:
- Without sedation in most cases
- In the office setting rather than operating room
- With simultaneous therapeutic interventions when cricopharyngeal strictures are identified 2
Important Caveat
The evidence shows that flexible esophagoscopy by ENT surgeons is complementary to, not a replacement for, gastroenterology-performed EGD 2. Each specialty brings unique expertise and visualization capabilities to different anatomical regions of the upper aerodigestive tract.