Gastric Cancer is a general term for a group of conditions with one thing in common inflammation of the lining of the stomach.
Gastritis may occur suddenly (acute gastritis), or appear slowly over time (chronic gastritis). In some cases, gastritis can lead to ulcers and an increased risk of stomach cancer. For most people, however, gastritis isn't serious and improves quickly with treatment.
Chronic gastric is determined by histopathology (appearance of the gastric mucosa) with symptoms lasting a long time. There is no widely accepted classification system although some have been proposed.