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Most ulcers are caused by a bacterium called Helicobacter pylori (H. pylori). This is contrary to the commonly held belief that ulcers come from eating spicy foods or from too much stomach acid. ...
Testing for stomach acid is used to determine the quantity and acidity of the stomach's contents. These tests are performed to check whether material from the small intestine is coming back up...
Zollinger-Ellison syndrome is characterized by peptic ulcers caused by an excess secretion of gastric acid produced by gastric tumors. Gastrinomas are usually found in the duodenum but also may...
A duodenal ulcer is a well-defined break in the mucosa of the duodenum, usually less than 1 cm. These ulcers almost always occur in the first part of the duodenum and may penetrate the muscularis...
Ulcerative colitis is an inflammation in the lower intestine, leading to bloody stools, abdominal pain, constant diarrhea and a reduced appetite. Diagnosis can be difficult because its symptoms...