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Ménétrier disease is a rare, acquired, premalignant disease of the stomach characterized by massive gastric folds, excessive mucus production with resultant protein loss, and little or no acid production (achlorhydria). The disorder is associated with excessive secretion of transforming growth factor alpha (TGF-α). [1]
The gastric folds (or gastric rugae) are coiled sections of tissue that exist in the mucosal and submucosal layers of the stomach. [1] They provide elasticity by allowing the stomach to expand when a bolus enters it. These folds stretch outward through the action of mechanoreceptors, which respond to the increase in pressure. [2]
Linitis plastica (sometimes referred to as leather bottle stomach) is a morphological variant of diffuse stomach cancer in which the stomach wall becomes thick and rigid. [ 1 ] Linitis plastica is a type of adenocarcinoma and accounts for 3–19% of gastric adenocarcinomas. [ 1 ]
The pylorus of the stomach has a thickened portion of the inner circular layer: the pyloric sphincter. Alone among the GI tract, the stomach has a third layer of muscular layer. This is the inner oblique layer and helps churn the chyme in the stomach.
According to the Axial Twist theory, the rotation is part of a complex twist that involves the entire body in all vertebrate animals. During this twist, the anterior head region rotates 90° counterclockwise, the body 90° clockwise, but sparing the heart and bowels. Accordingly, the embryo turns on its side.
Gastric antral vascular ectasia (GAVE) is an uncommon cause of chronic gastrointestinal bleeding or iron deficiency anemia. [ 1 ] [ 2 ] The condition is associated with dilated small blood vessels in the gastric antrum , which is a distal part of the stomach . [ 1 ]
After making a differential diagnosis of abdominal distension, it is important to take a careful medical history. [9] Here are the most common causes of abdominal distension classified as an underlying cause and as a secondary disease. As an underlying disease cause: Constipation; Lactose intolerance and other food intolerances
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.