Synchronous gastrointestinal stromal tumour and mucosa-associated lymphoid tissue lymphoma of the stomach in a Helicobacter pylori negative patient – A case report

Introduction: Simultaneous appearance of gastric mucosa-associated lymphoid tissue lymphoma (MALT) with gastrointestinal stromal tumor (GIST) is extremely rare. Classic studies have suggested that not only the gastric cancers, but primary gastric MALT-lymphoma but also the different gastric cancers are associated with Helicobacter pylori infection. Case: We report on a 78 year old man who was referred to our department with upper gastrointestinal bleeding. Urgent gastroscopy revealed an ulcer in the middle of the body of the stomach. The second look endoscopy revealed an umbilicated polypoid lesion proximal to t…