title: Primary gastric lymphoma versus gastric cancer. An endoscopic and radiographic study of differential diagnostic possibilities.
abstract: Eighteen patients with primary gastric malignant lymphoma were compared retrospectively with an age- and sex-matched group of patients with gastric cancer. It was found that a correct preoperative diagnosis was established in 8 out of 18 lymphoma patients (44%). Of the remaining patients eight were preoperatively diagnosed as cancers and two as benign ulcers. Malignancy was not suggested by biopsy or cytology in a total of six lymphoma patients. There was no difference as regards the size of the gastric lesion between the groups. A diffuse involvement of the stomach was found only in lymphoma patients. Furthermore, lymphoma patients often showed superficial stellate ulcers and a sharp margin between the lesion and the normal mucosa. It is suggested that these findings should make the investigator aware of the possibility of a gastric lymphoma. When this diagnosis is considered, great importance should be attached to obtaining large biopsies which possibly allow a correct preoperative diagnosis more often.
mesh_terms: D000328:Adult; D000368:Aged; D001706:Biopsy; D003937:Diagnosis, Differential; D005260:Female; D005753:Gastric Mucosa / Q000473:pathology; D005773:Gastroscopy / Q000379:methods*; D006801:Humans; D008223:Lymphoma / Q000175:diagnosis* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000175:diagnosis* / Q000473:pathology; D013276:Stomach Ulcer / Q000175:diagnosis