This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Peptic Ulcer and Related Disorders, Subject name: Medicine
[{'content': 'Helicobacter pylori is not associated with : \nSelect and explain. \nA. Gastrointestinal lymphoma, B. Gastric cancer, C. Gastric leiomyoma, D. Peptic ulcer', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e. Gastric leiomyoma Ref.: Harrison 17th/e p 946, 1858 & 16th/ep 886, 1749 (15th/e p961) * Diseases associated with H. Pylori infection Non-cardia gastric Ca B-cell non-Hodgkin's gastric lymphoma Gastric ulcer Duodenal ulcer Chronic gastritis Gastroesophageal reflux disease. Association with H. pylori (OR): 3-6 6-50 2-8 CD O OJ o", 'role': 'assistant'}]