Barrett’s esophagus is a serious condition where the normal squamous lining of the lower esophagus is replaced by columnar epithelium (intestinal metaplasia) due to chronic gastroesophageal reflux disease (GERD). It is a precancerous condition that increases the risk of esophageal adenocarcinoma if high-grade dysplasia develops.
Endoscopic Appearance of Barrett’s Esophagus
In endoscopic images, Barrett’s esophagus shows characteristic changes:
- Normal Esophagus: Pinkish-white, smooth squamous epithelium.
- Barrett’s Esophagus: Salmon-pink or reddish columnar mucosa extending upwards from the gastroesophageal junction (Z-line). It looks velvety or velvet-like compared to the normal pale lining.
- The squamocolumnar junction (where pink meets white) is often irregular or displaced proximally.
Doctors look for:
- Tongue-like projections or islands of columnar mucosa above the gastroesophageal junction.
- Circumferential involvement in long-segment Barrett’s.
- Short-segment Barrett’s (<3 cm).
Important Diagnostic Points
- Biopsy is Essential: Visual appearance alone is not enough. Multiple biopsies are taken from the suspected areas to confirm intestinal metaplasia (presence of goblet cells).
- Prague Classification: Used to describe the extent – C (circumferential) and M (maximum) length in cm. Example: C3M5 means 3 cm circumferential and 5 cm maximum length.
- High-Grade Dysplasia: Requires careful evaluation as it carries high risk of progression to cancer.
Clinical Relevance
- Long-standing GERD is the main risk factor.
- Patients with Barrett’s need regular surveillance endoscopy.
- Treatment options include:
- Lifestyle modifications and acid suppression (PPI therapy)
- Endoscopic therapies (Radiofrequency Ablation, Endoscopic Mucosal Resection)
- Photodynamic Therapy (PDT) in select cases
- Surgery in advanced cases
Key Takeaway for Students/Exams: Remember the endoscopic appearance – “Salmon pink” or “Velvety red” mucosa above the GE junction. Biopsy confirmation with intestinal metaplasia is diagnostic. Always correlate with GERD history.
Early detection and proper management can prevent progression to esophageal cancer.