Radiological diagnosis of malignant lymphoma of the stomach based on its macroscopical finding with specialreference to differentiation from gastric carcinoma

Malignant gastric lymphoma is an uncommon but important lesion with a more favorable prognosis than that ofgastric carcinoma. A total of 16 cases of gastric malignant lymphoma examined during a period from Jan. 1980 toSept. 1983 at Seoul National University Hospital were subjected to the radiological and pathologic correlations.In all cases, the diagnosis was established by histopathology of the resected specimens (9 cases) or endoscopicbiopsy specimesn ( 7 cases). Based on the comparative study of upper G-I series and macroscopic findings of thesurgically resected specimen, the authors investigated the reliable radiographic findings which can be valuable indifferentiation of gastric lymphoma from other gastric lesions, especailly carcinoma, and suggested the followingdiagnostic criteria for the malignant lymphoma of the stomach. 1. Discrete multiple polypoid lesions with orwithout central umbilication. 2. Geographic ulcer, deviated from center of the mass. 3. Irregular thickness ofelevated rim of the mass. 4. Diffuse giant gastric rugae. 5. Giant gastric rugae, mixed with other lesion.