Autoimmune Atrophic Gastritis

Classification / Lists

Reactive gastropathy / chemical gastritis
- Includes most acute gastritis
- Various causes including:
  - Alcohol
  - NSAIDS and other drugs
  - Bile and/or duodenal contents (alkaline) reflux
    - Frequently post-surgical
Chronic gastritis and chronic active gastritis
- Non-atrophic, predominantly antral
  - Includes Helicobacter-associated chronic active gastritis
  - Late stages may have multi-focal atrophy
- Atrophic, fundic
  - Autoimmune
Other drug related gastritis
- Iron
  - Stainable iron crystalline material present
- Aluminum based antacids (gastric mucosal calcinosis)
  - Small, pink, partially calcified. refractile crystals
- Kayexalate
  - Rhomboid or triangular, non-polarizable basophilic crystals
- Chemotherapy
- See excellent reviews
  - Parfitt and Driman, Hum Pathol 2007, 38:927
  - Srivastava and Lauwers, Histopathol 2007, 50:15
Hypertrophic/hyperplastic gastritis
- Menetrier disease
- Zollinger Ellison syndrome
Special types
Vascular
Infectious
- Helicobacter
- Viral
- Fungal
- Parasitic