Gastric pseudolymphoma and its relationship to malignant gastric lymphoma.

Gastric pseudolymphoma is generally considered a benign, reactive condition to chronic inflammation. We report a patient who, although initially diagnosed as having a gastric pseudolymphoma, was found to have a malignant gastric lymphoma 5 yr later. A review of the literature revealed 12 previously reported cases in which gastric pseudolymphoma was associated with a malignant gastric lymphoma. The premalignant nature of gastric pseudolymphoma is discussed, and frequent endoscopic surveillance to exclude transition to malignant lymphoma is recommended.