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(Pathology) pathol an ulcer of the mucous membrane lining those parts of the alimentary tract exposed to digestive juices. It can occur in the oesophagus, the stomach, the duodenum, the jejunum, or in parts of the ileum
an erosion of the mucous membrane of the lower esophagus, stomach, or duodenum, caused in part by the corrosive action of the gastric juice.
When the walls of the digestive tract are eroded by digestive juices, ulcers form. The most common locations are the walls of the stomach (gastric ulcer) and duodenum (duodenal ulcer). Ulcers can be caused by infection with H. pylori bacteria, an excess of hydrochloric acid, certain drugs (e.g. aspirin or ibuprofen), smoking, alcohol, coffee, or stress.
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|Noun||1.||peptic ulcer - an ulcer of the mucous membrane lining of the alimentary tract|
ulcer, ulceration - a circumscribed inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue
duodenal ulcer - a peptic ulcer of the duodenum
gastric ulcer - a peptic ulcer of the stomach