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Katsuya Kasai and Rokuzo Kobayashi isolate spirochetes in cats and transmit them to rabbits, producing ulcers. [10] 1921 Luger discovers spirochetes in the gastric juice, and associates their presence with gastric cancer. [4] Urease 1924 Luck and Seth discover urease in the human stomach, which they believe is naturally occurring. [11] 1925
Peptic ulcer disease is when the inner part of the stomach's gastric mucosa (lining of the stomach), the first part of the small intestine, or sometimes the lower esophagus, gets damaged. An ulcer in the stomach is called a gastric ulcer , while one in the first part of the intestines is a duodenal ulcer . [ 1 ]
Many stomach diseases are associated with infections. In the past it was widely but incorrectly believed that the highly acidic environment of the stomach would keep the stomach immune from infection. Many studies have indicated that most cases of stomach ulcers, gastritis, and stomach cancer are caused by Helicobacter pylori infection.
A large hiatal hernia. Two x-rays from the same examination. On lying down (A) more stomach slides above the diaphragm than when upright (B) Note constriction of stomach at diaphragm level. Cameron lesions. A long linear erosion and smaller non-linear erosions on the crests of inflamed gastric folds at the level of the diaphragm.
Gastric erosion occurs when the mucous membrane lining the stomach becomes inflamed. Specifically, the term "erosion" in this context means damage that is limited to the mucosa, which consists of three distinct layers: the epithelium (in the case of a healthy stomach, this is non-ciliated simple columnar epithelium), the basement membrane, and the lamina propria.
The causes are divided into benign or malignant. Benign Peptic ulcer disease; Infections, such as tuberculosis; and infiltrative diseases, such as amyloidosis.; A rare cause of gastric outlet obstruction is blockage with a gallstone, also termed "Bouveret syndrome" or "Bouveret's syndrome".
Gastritis is the inflammation of the lining of the stomach. [1] It may occur as a short episode or may be of a long duration. [1] There may be no symptoms but, when symptoms are present, the most common is upper abdominal pain (see dyspepsia). [1]
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. [65]