stomach polyps. cross section of human stomach with gastric polyp

stomach polyp gastric cross disease medical anatomy medicine human surgery cancer organ body digestive system inflammation tumor esophagus gastroenterology gastroscopy bowel endoscopy vector gastritis polyps treatment diagnosis gastrointestinal health biopsy instrument examination disorder diagram gut abdomen icon tract egd test benign lining histology hyperplasia adenomatous pylori helicobacter polyps lining bacterial infection caused pylori