"Emphysematous gastritis is a cause of gastric emphysema. It is a form of phlegmonous gastritis caused by gas-producing organisms 3. In this condition, microorganisms (e.g. Escherichia coli, Clostridium perfringens, Clostridium welchii, or mixed infections with Staphylococcus aureus) produce the gas, which is identified within the stomach wall 3. It is an uncommon entity with a high mortality rate."
"Imaging appearances are similar and essentially indistinguishable to other causes of gas within the stomach wall; please refer to gastric emphysema."