Background
Certain gastrointestinal and extra-intestinal diseases are caused by the gram-negative bacterium Helicobacter pylori (H. pylori). We aimed to determine the potential H. pylori role in chronic rhinosinusitis (CRS) with or without nasal polyposis. This cross-sectional study was conducted on 80 subjects. Patients were further categorised into two equal groups: study group (n = 40) were diagnosed with CRS with or without nasal polyposis (CRSWNP and CRSSNP) who had failed medical treatment and scheduled for surgery, and control group (40 patients) were admitted for septoplasty. All patients had clinical assessment, physical assessment, diagnosis of rhinosinusitis (according to EPOS), based on symptoms, rhinoscopic/endoscopic findings, CT scan findings, questionnaire for gastroesophageal reflux disease (GERD), and questionnaire for laryngopharyngeal reflux (LPR). Samples were collected in the operating room during surgery from both groups and PCR tissue was done.

Results
The study group patients demonstrated significantly higher history of GERD, LPR, and H. pylori. H. pylori patients had significantly lower ages than those without (P = 0.03). Patients with H. pylori revealed significantly higher GERD history (P