The pseudolymphoma of the stomach is known to be a bengin proliferation of lymphoid tissue, which can be mistaken hostologically for malignant lymphoma. The etiology of pseudolymphoma is controversial, but it B believed to be a manifestation of chronic inflammatory process. Authors present 3 cases of gastric lymphoma. Inpressions of upper gastrointestual series was as follows ; lymphoma or chronic gastritis in one case, ulcerative carcinoma in another case and early gastric carcinoma in the other case. Initial endoscopic findings suggested infiltrating carcinoma, ulcerative carcinoma and two benign gastric ulcers, respectively. One case was associated with early gastric carcinoma.