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Pyloric stenosis is a narrowing of the opening from the stomach to the first part of the small intestine (the pylorus). [1] Symptoms include projectile vomiting without the presence of bile . [ 1 ] This most often occurs after the baby is fed. [ 1 ]
Pyloromyotomy is a surgical procedure in which a portion of the muscle fibers of the pyloric muscle are cut. This is typically done in cases where the contents from the stomach are inappropriately stopped by the pyloric muscle, causing the stomach contents to build up in the stomach and unable to be appropriately digested.
In children, congenital pyloric stenosis / congenital hypertrophic pyloric stenosis may be a cause. A pancreatic pseudocyst can cause gastric compression. Pyloric mucosal diaphragm could be a rare cause. Malignant Tumours of the stomach, including adenocarcinoma (and its linitis plastica variant), lymphoma, and gastrointestinal stromal tumours
On the other hand, increased acid production at the pyloric antrum is associated with duodenal ulcers in 10% to 15% of H. pylori infection cases. In this case, somatostatin production is reduced and gastrin production is increased, leading to increased histamine secretion from the enterochromaffin cells, thus increasing acid production.
Gastrectomy, gastric bypass surgery, diabetes, esophageal surgery, absent or inefficient pyloric sphincter, pyloric stenosis Dumping syndrome occurs when food, especially sugar, moves too quickly from the stomach to the duodenum —the first part of the small intestine—in the upper gastrointestinal (GI) tract .
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Peristaltic waves occur in an attempt to decompress the intestine, and the strong contractions of the intestinal muscles push the contents backwards through the pyloric sphincter into the stomach, where they are then vomited. [3] Fecal vomiting can also occur in cats. [5]
Newborns present with bilious or non-bilous vomiting (depending on where in the duodenum the obstruction is) within the first 24 to 48 hours after birth, typically after their first oral feeding. Radiography shows a distended stomach and distended duodenum, which are separated by the pyloric valve, a finding described as the double-bubble sign.