Air within the wall of the stomach; roentgen manifestations and a new roentgenographic sign.

Two new cases of air in the stomach wall have been described. One case presented with the typical findings of interstitial gastric emphysema. The second case demonstrated the usual clinical and pathologic criteria of emphysematous gastritis but presented an atypical roentgenographic picture. Linear air densities in the stomach wall associated with air in the portal system are described for the first time in a case of emphysematous gastritis.