atrophic gastritis

gastritis /gas·tri·tis/ (gas-tri´tis) inflammation of the stomach.

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atrophic gastritis  chronic gastritis with infiltration of the lamina propria, involving the entire mucosal thickness, by inflammatory cells.

catarrhal gastritis  inflammation and hypertrophy of the gastric mucosa, with excessive secretion of mucus.

eosinophilic gastritis  that in which there is considerable edema and infiltration of all coats of the wall of the pyloric antrum by eosinophils.

erosive gastritis , exfoliative gastritis that in which the gastric surface epithelium is eroded.

giant hypertrophic gastritis  excessive proliferation of the gastric mucosa, producing diffuse thickening of the stomach wall.

hypertrophic gastritis  gastritis with infiltration and enlargement of the glands.

polypous gastritis  hypertrophic gastritis with polypoid projections of the mucosa.

pseudomembranous gastritis  that in which a false membrane occurs in patches within the stomach.

superficial gastritis  chronic inflammation of the lamina propria, limited to the outer third of the mucosa in the foveolar area.

toxic gastritis  that due to action of a poison or corrosive agent.

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atrophic gastritis

n.

Chronic gastritis with atrophy of the mucous membrane and destruction of the peptic glands.

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atrophic gastritis,

a chronic inflammation of the stomach, associated with degeneration of the gastric mucosa. There are two types: a type associated with Helicobacter pylori and autoimmune, which is characterized by antiparietal and antiintrinsic factor antibodies. Autoimmune atrophic gastritis is seen in elderly patients and in persons with pernicious anemia; it rarely causes epigastric pain. See also pernicious anemia.

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gastritis (gastrī´tis),

n an inflammation of the lining of the stomach that occurs in both acute and chronic forms. Acute gastritis may be caused by aspirin or other antiinflammatory agents, corticosteroids, drugs, foods, condiments, and alcohol and chemical toxins. The symptoms are anorexia, nausea, vomiting, and discomfort after eating. Chronic gastritis is usually a sign of underlying disease, such as peptic ulcer or pernicious anemia.

gastritis, atrophic,

n a chronic form of gastritis with atrophy of the mucous membrane and destruction of the peptic glands, sometimes associated with pernicious anemia or gastric carcinoma.

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gastritis

inflammation of the lining of the stomach. Gastritis is one of the most common stomach disorders, and occurs in acute, chronic and toxic forms. Its clinical manifestation is vomiting. In veterinary medicine, the pathogenesis, clinical findings and postmortem lesions are poorly defined and are, in many cases, based on functional rather than on structural changes.

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acute gastritis

severe gastritis caused by food poisoning, overeating or bacterial or viral infection, and often accompanied by enteritis. The outstanding sign of acute gastritis is abdominal pain.

atrophic gastritis

an immune-mediated disorder described in dogs with systemic lupus erythematosus; associated with antiparietal antibodies.

chronic gastritis

an inflammation of the stomach that may occur repeatedly or continue over a period of time.

chronic atrophic gastritis

rare in dogs; associated with mucosal thinning, loss of parietal cells, mucosal metaplasia and atrophy of gastric glands.

emphysematous gastritis

inflammation of the gastric wall by Clostridium perfringens.

eosinophilic gastritis

diffuse infiltration or discrete nodules of eosinophils in the stomach wall occur rarely in dogs. May be immune-mediated, due to allergy or parasites.

giant hypertrophic gastritis

excessive proliferation of the gastric mucosa, producing diffuse thickening of the wall; inflammatory changes may be associated. Weight loss, vomiting, diarrhea, hematemesis and hypoalbuminemia occur. Occurs in humans, dogs (particularly Basenjis), mice and nonhuman primates. Called also Ménétrier's disease.

granulomatous gastritis

see gastric habronemiasis.

histiocytic gastritis

rare cases occur in dogs in association with amyloidosis.

hypertrophic glandular gastritis

see giant hypertrophic gastritis (above).

infarctive gastritis

seen rarely in dogs, usually associated with fungal infection.

toxic gastritis

gastritis resulting from ingestion of a corrosive substance such as a strong acid or poison. There is cramping stomach pain, accompanied by diarrhea and vomiting. The vomitus may be bloody. The victim may collapse.

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atrophic gastritis

Gastroentrology A condition that is the end result of chronic gastritis, characterized by mucosal atrophy, which may be a precursor of gastric CA. See Helicobacter pylori, Stomach cancer.