BACKGROUND : Helicobacter pylori is a gram-negative bacteria known as the causative agent of chronic gastritis, peptic ulcer, gastric adenocarcinoma, and mucosa-associated lymphoid tissue lymphoma. Several studies have correlated H. in pathogenesis upper airway diseases. can be detected saliva, oropharyngeal aphthae, nasal sinus mucosa, secretions from tympanic cavities, larynx, pharyngeal tiss...
