Peptic ulcer

Peptic ulcer mainly refers to chronic ulcers occurring in the stomach and duodenum, and can also occur in the lower esophagus, around the gastrojejunal anastomosis, and in Meckel's diverticulum containing ectopic gastric mucosa. The formation of these ulcers is related to the digestive action of gastric acid and pepsin, hence the term peptic ulcer. The overall incidence of this disease accounts for 5-10% of the population. Duodenal bulb ulcers are more common than gastric ulcers, predominantly affecting young and middle-aged adults, with a higher incidence in males than females. Children can also be affected, and the proportion of elderly patients has been increasing year by year. The average age of patients with gastric ulcers is about 10 years older than that of patients with duodenal bulb ulcers.