Peptic ulcer意思

"Peptic ulcer" is a term used to describe a type of ulcer that occurs in the lining of the stomach, small intestine, or esophagus. These ulcers are caused by the action of stomach acid and enzymes that break down food, which can damage the lining of these organs. Peptic ulcers can be painful and may bleed, and they are a common cause of upper abdominal pain. They are also a risk factor for more serious conditions such as gastric cancer and stomach bleeding.