Background/Aims: Current epidemiological data suggest that the incidence of gastric polyps (GP) is rare, and its etiology and pathogenesis are still not clear. This study analyzed and compared the occurrence and pathological types of GPs in southeast Chinese patients according to gender and age. Materials and Methods: This was a retrospective study of patients diagnosed with GP (n=2125) in Wenzhou People's Hospital (China) between January 2004 and December 2013. The relationships between the detection rate, the characteristics of GP, and the patients' demographic data were analyzed. Results: The detection rate of GP was 2.3% and 3.9% in males and females, respectively (p<0.01). The detection rate increased with increasing age in both genders. Polyps in the gastric antrum and gastric body were the most prevalent in both genders. Similarly, inflammatory polyps and hyperplastic polyps were the most prevalent in both genders. Hyperplastic polyps were more common in females than in males (28.6% vs. 24.2%, p<0.05), while there was no difference for inflammatory polyps, fundic GP, and adenoma (p>0.05). Age had no impact on the pathology of GP (p>0.05). Conclusions: The incidence of GPs was associated with gender and age.

Aims: To explore the tongue coating microbiota composition in patients with atrophic gastritis by using the 16S rRNA gene sequencing technology. Methods: The study included 29 atrophic gastritis patients and 29 age and gender-matched non-atrophic gastritis controls. By sequencing the V3-V4 region of the 16S rRNA, we investigated the microbial community structure and diversity on the tongue coating. Results: There was no significant difference in the microbial diversity on the tongue coating between the two groups. However, compared with the control, the atrophic gastritis group had a smaller number of operational taxonomic units (OTUs). At the class level, patients with atrophic gastritis had lower relative abundances of Betaproteobacteria and Spirochaetia than the control group. At the gene level, the abundance of Neisseria and Aggregatibacter in atrophic gastritis group had significantly decreased compared with control ones. Furthermore, functional prediction revealed that 24 metabolic pathways significantly differed between the two groups. Conclusions: Our findings provide novel evidence that tongue coating microbiota may be a biomarker for characterizing patient with atrophic gastritis, but its mechanism needs to be further elaborated.

Background and Aim: Chronic atrophic gastritis is a known precancerous lesion for gastric cancer, with an overall 5-year survival less than 20%. However, there is few new data describing the progression rate from atrophic gastritis (AG) to gastric cancer in China. We retrospectively analyzed the risk of gastric cancer among patients with AG and aimed to determine the accuracy of endoscopy diagnosis of AG in China. Methods: Clinical features and endoscopic profiles of chronic atrophic gastritis patients from Wenzhou People's Hospital between January 2006 and December 2016 were analyzed retrospectively. Results: There were 61,810 cases analyzed retrospectively. 3641 cases of atopic gastritis were diagnosed by endoscopy, in which 1704 cases were confirmed by pathological biopsy; the diagnostic coincidence rate was 46.80%; 2631 cases were diagnosed as atrophic gastritis by pathological biopsy, in which 927 cases were ignored by endoscopy; the miss diagnosis rate was 35.23%. The progression rate from chronic atrophic gastritis and non-atrophic gastritis to gastric cancer respectively was 0.79% and 0.43%. The rate of intestinal metaplasia in mild AG, moderate AG and severe AG respectively was 75.63%, 86.18% and 90.32%, 3.42%, 6.27% and 5.16% about dysplasia in three different degree atrophic gastritis. Conclusions: Endoscopy diagnosis and pathology diagnosis of AG were statistically different. Patients with atrophic gastritis have higher risk of developing into gastric cancer, but it needs further investigation. Different degrees of atrophic gastritis have the different proportions of intestinal metaplasia and dysplasia.

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