Detection of APCA(Antiparietal cell antibody), anti-intrinsic factor antibody (AIFA) and Helicobacter pylori (HP) antibodies in conjunction with serum gastrin are effective for diagnostic purposes. File:Histopathology of antral mucosa with atrophy.Histopathology of antral mucosa with atrophy. H&E 10x. Antral gastric mucosa with accentuated atrophy because replacement by extensive intestinal metaplasia. File:Histopathology of fundic mucosa with atrophy.Histopathology of fundic mucosa with atrophy. H&E 10x; square 20x. Fundic-corporal gastric mucosa with extensive loss of gastric glands, partially replaced by pseudo-pyloric metaplasia. Classification The notion that<unk>  could be classified depending on the level of progress as "closed type" or "open type" was suggested in early studies, but no universally accepted classification exists as of 2017.
Atrophic gastritis
Lymphocytic esophagitis
Herpes esophagitis
Tropical ulcer
Gastric lymphoma
Eosinophilic esophagitis
Barrett's esophagus
Cytomegalovirus esophagitis