Conclusion:
The microbiota may be related to the formation of echogenic bowel via secretion of mucus and gas in the gut.
Acknowledgements: We thank all of the patients who provided samples for the current work.
Conflict of Interest: None declared.
Funding: Support for key clinical specialty construction projects of Fujian Province [No. (2017) 739];Supported by Quanzhou high level talent support project[2018C071R].
Ethical Statement: This study was approved by the ethics review committee of the Second Affiliated Hospital of Fujian Medical University on June 6, 2016 [Approval NO 2016.25].All patients signed written informed consent before participating in the study program.