| http://www.w3.org/ns/prov#value | - They can show any abnormalities, including ulcers, inflammation, tissue damage in the esophagus and stomach, hiatal hernia, etc. (The test is technically known as esophagogastroduodenoscopy or EGD).Biopsy, a test in which tissue samples are removed and then examined under a microscope to look for damage, infection and abnormal growths.
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