the topography of gastritis was investigated by selective endoscopic biopsies from the antrum and body of the stomach in 231 patients with duodenal or gastric ulcers , 165 patients with gastric carcinoma , 83 patients with polyps of the gastric epithelium and 122 patients after gastric resection ( billroth ii ) .
C0699791
gastric carcinoma
C0014609
epithelium