Gastric and duodenal ulcer
Gastric and duodenal peptic ulcers are the cyclical appearance of peptic ulcers in the stomach or duodenum. Peptic ulcer is a defect of the mucosa accompanied by inflammatory infiltration and necrosis. In most cases, the location of the ulcer is the duodenal bulb and stomach, although they can also occur in the lower esophagus and duodenal loop.
