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Atrophic gastritis is a process of chronic inflammation of the gastric mucosa of the stomach, leading to a loss of gastric glandular cells and their eventual replacement by intestinal and fibrous tissues.
Gastric ulcers may develop; it is unclear if they are the causes or the consequences. Intestinal metaplasia typically begins in response to chronic mucosal injury in the antrum and may extend to the body. Gastric mucosa cells change to resemble intestinal mucosa and may even assume absorptive characteristics.
Reactive gastropathy is morphologically distinct entity [3] [4] that can be separated from gastritis, which by definition has a significant inflammatory component. As a reactive gastropathy may mimic a (true) gastritis symptomatically and visually in an endoscopic examination , it may incorrectly be referred to as a gastritis.
Helicobacter pylori colonizes the stomach for decades in most people, and induces chronic gastritis, a long-lasting inflammation of the stomach. In most cases symptoms are never experienced but about 10–20% of those infected will ultimately develop gastric and duodenal ulcers, and have a possible 1–2% lifetime risk of gastric cancer.
It can be classified into mucosal, muscular and serosal types based on the depth of involvement. [4] [5] Any part of the GI tract can be affected, and isolated biliary tract involvement has also been reported. [6] [7] The stomach is the organ most commonly affected, followed by the small intestine and the colon. [8] [9]
However, recent research indicates that the gastric mucosa which secretes gastric acid is acid-resistant. [citation needed] There are many types of chronic disorders which affect the stomach. However, since the symptoms are localized to this organ, the typical symptoms of stomach problems include nausea, vomiting, bloating, cramps, diarrhea and ...
The usual appearance of portal hypertensive gastropathy on endoscopy is a mosaic-like or reticular pattern in the mucosa. Red spots may or may not be present. The pattern is usually seen throughout the stomach. [2] A similar pattern can be seen with a related condition called gastric antral vascular ectasia (GAVE), or watermelon stomach.
Inflammation of the stomach by infection from any cause is called gastritis, and when including other parts of the gastrointestinal tract called gastroenteritis. When gastritis persists in a chronic state, it is associated with several diseases, including atrophic gastritis, pyloric stenosis, and gastric cancer.