Esophagogastric Junction Outflow Obstruction: A Diagnosis in Evolution

Area of Science:

• Gastroenterology
• Esophageal Motility Disorders

Background:

• Esophagogastric junction outflow obstruction (EGJOO) is an evolving diagnosis, potentially representing early or variant achalasia.
• The Chicago Classification version 4.0 introduced more stringent criteria for EGJOO diagnosis.

Purpose of the Study:

• To explore the newest diagnostic criteria for clinically relevant EGJOO.
• To review current and emerging management options for EGJOO.

Main Methods:

• Review of updated diagnostic criteria based on Chicago Classification 4.0.
• Analysis of diagnostic parameters including integrated relaxation pressure (IRP), intrabolus pressure, and esophagram/impedance planimetry.
• Evaluation of treatment strategies targeting the lower esophageal sphincter (LES).

Main Results:

• Current EGJOO criteria involve elevated median IRP (supine/upright), elevated intrabolus pressure, dysphagia/chest pain, and abnormal esophagram/impedance planimetry.
• Exclusion of secondary causes of elevated IRP is crucial.
• Management involves targeted LES therapy, ranging from monitoring to dilation and myotomy.

Conclusions:

• Accurate diagnosis of EGJOO requires careful scrutiny of adjuvant testing and data.
• Treatment decisions for EGJOO necessitate careful consideration of LES disruption appropriateness.
• A spectrum of management options exists, tailored to individual patient needs.