Erythema of the antrum means the inner lining of the antrum appears reddened and inflamed when viewed on an endoscopy, explains the Saudi Journal of Gastroenterology. Erythema of the antrum is usually diagnosed as the result of gastritis.
The antrum is the lower part of the stomach, close to where the stomach empties into the intestine, notes the American Cancer Society. Gastritis is a problem with the lining of the stomach. It can be characterized as irritated, eroded or inflamed. Gastritis can have a sudden onset or gradually get worse. Common causes of acute gastritis include stress, consuming excessive amounts of alcohol or taking medications such as aspirin that irritate the lining of the stomach, states WebMD. Common causes of chronic gastritis include infection with a bacterium called Helicobacter pylori, pernicious anemia or bile reflux. Symptoms of gastritis include nausea, vomiting, abdominal pain and loss of appetite.
Gastritis can be diagnosed on the basis of symptoms and patient history. A endoscopic examination may be conducted to look at and possibly biopsy the lining of the stomach, says WebMD. When performing an endoscopic examination, a thin flexible scope is passed down the throat into the stomach, according to the American Society for Gastrointestinal Endoscopy. The scope has a light and it allows the doctor to view the interior of the stomach on a monitor. Blood tests may be done to determine whether the patient has anemia. Fecal occult blood testing involves finding of blood traces in the patient's stool, as stated by WebMD.