Table 3

Acute gastritis: basic histological patterns

Lymphocytic/lympho-histiocytic/apoptotic pattern411–418 Some viral gastritis (ie, CMV, EBV, concurrent viral infection)
GvHD-related gastritis
Checkpoint inhibitor (ie, nivolumab, pembrolizumab)-related gastritis
Predominant neutrophilic pattern419–423 Bacterial/fungal gastritis
Predominant eosinophilic pattern424–428 Allergic gastritis (ie, Anisakis, celecoxib)
Endothelial patternHaemorrhagic gastritis
Radiation gastritis
Ischaemic gastritis
Burn-related gastritis
Post-surgical gastritis
Post-traumatic gastritis
Multiorgan failure-related gastritis

  • More than to a specific biological/histological pattern, ‘acute’ gastritis profile refers to the sudden onset of clinical symptoms.

  • CMV, cytomegalovirus; EBV, Epstein-Barr virus; GvHD, graft-versus-host disease.