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Related Concept Videos

Barrett Esophagus-II: Clinical Manifestations and Management01:21

Barrett Esophagus-II: Clinical Manifestations and Management

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Individuals with Barrett's esophagus are often asymptomatic, but they may experience symptoms commonly associated with GERD, such as heartburn and acid regurgitation. Additional symptoms can include difficulty swallowing, chest pain, unintentional weight loss, blood in the stool (which may appear black, tarry, or bloody), and episodes of vomiting.
To diagnose Barrett's esophagus, healthcare providers often recommend an endoscopy for those showing symptoms of acid reflux. The procedure...
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Esophageal Strictures-I: Introduction01:30

Esophageal Strictures-I: Introduction

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Esophageal strictures involve abnormal narrowing or tightening of the esophagus. They vary in length and severity, ranging from mild constriction to complete obstruction, and are classified as benign (noncancerous) or malignant (cancerous).
Etiology
The primary cause of esophageal strictures is long-standing gastroesophageal reflux disease (GERD), accounting for about 70 to 80% of adult cases. Chronic acid reflux can lead to injury and scarring of the esophageal lining, culminating in...
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Barrett Esophagus-I: Introduction01:21

Barrett Esophagus-I: Introduction

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Barrett's esophagus is a medical condition where the esophageal mucosa is significantly damaged by stomach acid or other digestive fluids, often due to long-term exposure associated with gastroesophageal reflux disease (GERD). In GERD, a weakened or abnormally relaxed lower esophageal sphincter allows stomach acid to flow persistently into the esophagus.
This constant acid exposure transforms the esophagus's pink mucosal lining (stratified squamous epithelium) into a type of lining more...
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Gastroesophageal Reflux Disease I: Meaning and Pathophysiology01:29

Gastroesophageal Reflux Disease I: Meaning and Pathophysiology

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Gastroesophageal Reflux Disease (GERD) involves the recurrent backflow of the stomach or duodenal contents into the esophagus, leading to troublesome symptoms and potential esophageal mucosal damage. Although GERD is often referred to as a disease, it is more accurately described as a syndrome, as it encompasses a range of symptoms and complications rather than a singular pathological entity, impacting a large number of individuals as the most prevalent upper gastrointestinal problem. Roughly...
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Esophagus01:24

Esophagus

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The esophagus, a muscular conduit linking the pharynx and stomach, measures roughly 10 inches (25.4 cm) and sits behind the trachea. It remains collapsed when not swallowing. The esophagus follows a predominantly straight path through the thoracic mediastinum and enters the abdominal cavity through a diaphragmatic opening known as the esophageal hiatus.
The movement of edibles from the pharynx into the esophagus is facilitated by the upper esophageal sphincter, which is formed primarily by the...
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Gastroesophageal Reflux Disease II: Clinical Features and Management01:29

Gastroesophageal Reflux Disease II: Clinical Features and Management

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Gastroesophageal reflux disease, or GERD, is a persistent medical condition that affects many individuals worldwide. Its clinical manifestations can vary greatly, making diagnosis and management challenging for healthcare professionals. The following is a comprehensive overview of the clinical manifestations, assessment, and management strategies for GERD.
Clinical Manifestations
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Related Experiment Video

Updated: Jan 4, 2026

Author Spotlight: Investigating the Pathophysiology of Eosinophilic Esophagitis
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Eosinophilic esophagitis.

Melissa M Watts, Carol Saltoun, Paul A Greenberger

    Allergy and Asthma Proceedings
    |November 7, 2019
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    Summary
    This summary is machine-generated.

    Eosinophilic esophagitis (EoE) involves esophageal dysfunction and eosinophil buildup. Dietary changes and topical corticosteroids are effective treatments for this condition.

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    Area of Science:

    • Gastroenterology
    • Immunology
    • Allergy

    Background:

    • Eosinophilic esophagitis (EoE) is a chronic immune-mediated esophageal disease.
    • It is characterized by esophageal dysfunction and persistent eosinophil infiltration.
    • EoE is distinct from erosive esophagitis and presents with varied symptoms across age groups.

    Purpose of the Study:

    • To define the key features, diagnostic criteria, and therapeutic approaches for eosinophilic esophagitis.
    • To differentiate EoE from other esophageal conditions based on clinical, endoscopic, and histologic findings.
    • To review current treatment strategies, including dietary modifications and pharmacotherapy.

    Main Methods:

    • Review of clinical presentations, endoscopic findings (e.g., linear furrows, mucosal rings, white plaques), and histologic criteria (≥15 eosinophils/HPF).
    • Analysis of molecular markers such as interleukin-5 and eotaxin-3.
    • Evaluation of patient sensitization to aeroallergens and foods.

    Main Results:

    • EoE diagnosis requires esophageal dysfunction, eosinophilia, and exclusion of other causes.
    • Endoscopic findings can include linear furrows, rings, and white plaques, though pediatric patients may have normal endoscopic results.
    • Histology shows increased intramucosal eosinophils, and molecular studies reveal elevated IL-5 and eotaxin-3, linked to mast cell activation and eosinophil migration.

    Conclusions:

    • Dietary therapy, involving removal of food antigens, is a cost-effective first-line treatment for EoE.
    • Topical corticosteroids are the standard pharmacotherapy, effectively reducing esophageal eosinophilia and symptoms.
    • Understanding EoE's multifaceted nature is crucial for accurate diagnosis and management.