This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Bacteriology (Haemophilus, Yersinia, Spirochaetes, Ricketssia, Chlamydia, Mycoplasma and Miscellaneous Bacteria), Subject name: Microbiology
Helicobacter pylori is not associated with:- 
Select and explain. 
A. Gastrointestinal lymphoma, B. Gastric cancer, C. Gastric leiomyoma, D. Peptic ulcer
C: Gastric leiomyoma
Answer: C: Gastric leiomyoma 
Explanation: Helicobacter pylori is associated with: Acute gastritis Peptic ulcer disease Chronic atrophic gastritis Autoimmune gastritis Promotes pernicious anemia Adenocarcinoma of stomach Non-Hodgkin's gastric lymphoma.