Web-Mediated Risk Assessment for Endoscopic Screening of Gastric Cancer

Randomized Trial Comparing Gastroscopy Following Web-Mediated Risk Assessment With Routine Endoscopy for Gastric Cancer Screening

Gastric cancer is one of the most common malignancies in China. Early detection is critical for gastric cancer management. However, the diagnosis rate of patients with early gastric cancer is still low. Therefore, the investigator design this study to access whether pre-endoscopic screening risk assessment of genetic and environmental risk factors could improve early gastric cancer diagnosis rate.

Inclusion Criteria:

• 1.Age 18-60. 2.Signed informed consent

Exclusion Criteria:

• 1.Severe back ground disease including malignancy. 2.State after gastric surgery. 3.COPD, CHF, CRF and any disease with respiratory disturbances. 4.Deviation of the nasal septum, lack of venous access at the dorsum of the hand or any other technical problem prevents gastric acid collection or base excess evaluation.