Gastritis will not turn into gastric cancer within a year, so patients should not be too nervous. However, it depends on the type of gastritis. If it is chronic atrophic gastritis, especially if the pathological examination has confirmed severe atypical hyperplasia, it is very likely that cancer will occur within one year. Patients with chronic atrophic gastritis need to pay attention and cooperate with the specialist to give regular medication treatment, and also need regular review and follow-up. For other types of gastritis, such as acute gastritis or chronic superficial gastritis, cancer will not occur, and if it does, it will take a very long time.