Endoscopic Description of Chronic Gastropathy
Chronic gastropathy on endoscopy characteristically shows pale mucosa, loss of gastric rugal folds, and prominent submucosal blood vessels due to thinning of the atrophied gastric epithelium. 1
Key Endoscopic Features
Standard White Light Endoscopy (HD-WLE)
The hallmark findings of chronic atrophic gastropathy include:
- Pale, blanched appearance of the gastric mucosa
- Loss or flattening of gastric folds (rugal atrophy)
- Increased visibility of submucosal vasculature - vessels become prominent through the thinned epithelium
- Mildly nodular areas when intestinal metaplasia is present 1
Distribution Pattern
The anatomic distribution provides diagnostic clues:
- Corpus-predominant pattern with antral sparing suggests autoimmune gastritis (AIG)
- The body and fundus show the most severe atrophic changes in AIG
- The antrum may appear relatively preserved or show only mild changes 1
Advanced Imaging Findings
Narrow Band Imaging (NBI)
When intestinal metaplasia accompanies chronic gastropathy, NBI reveals specific signs:
- Light Blue Crest (LBC) sign: Fine blue-white lines on epithelial surface crests, corresponding to the brush border (microvilli)
- White Opaque Field (WOF) or White Opaque Substance (WOS): Caused by light scattering from microscopic lipid droplets accumulating in metaplastic mucosa
- These features are best visualized with magnifying NBI 1
Clinical Context and Pitfalls
Important distinction: Chronic gastropathy differs fundamentally from portal hypertensive gastropathy, which shows a characteristic mosaic-like pattern with polygonal areas of erythema surrounded by pale reticular borders, with or without red spots 2, 3. This represents a vascular congestion pattern rather than true atrophy.
Common Diagnostic Challenges
The endoscopic changes in chronic gastropathy can be subtle and easily missed without careful inspection. To optimize detection 1:
- Use high-definition white light endoscopy as the baseline
- Apply NBI or other image-enhanced endoscopy when available
- Systematically examine the corpus and antrum separately
- Recognize that intestinal metaplasia on histology invariably implies underlying atrophic gastritis, even if not explicitly noted on pathology reports 1
Essential Biopsy Strategy
When endoscopic features suggest chronic gastropathy 1:
- Obtain topographical biopsies from body and antrum in separately labeled jars (minimum requirement)
- Take targeted biopsies from any visually abnormal areas
- This mapping determines anatomic extent and histologic severity for risk stratification
- Biopsies confirm the diagnosis and assess for intestinal metaplasia, dysplasia, or neoplasia
Associated Findings
Chronic gastropathy may coexist with:
- Gastric neuroendocrine tumors (NETs): Appear as small polypoid lesions, particularly in autoimmune gastritis 1
- Areas where intestinal metaplasia coexists with normal mucosa in a patchy distribution 1
The endoscopic recognition of these features is critical because chronic gastropathy represents a precancerous condition requiring surveillance endoscopy every 3 years when advanced atrophy is present 1.