Abstract:Objective By analyzing the data of 1,052 inpatients with colorectal adenoma who underwent gastroscopy, it was expected to provide a reference basis for the early detection and treatment of upper gastrointestinal mucosal lesions in patients with colorectal adenoma.Methods Retrospective analysis was conducted on the clinical data of 1 052 patients with colorectal adenoma from January 1, 2023 to December 31, 2023. The clinical manifestations, colonoscopy results, gastroscopy results and the distribution of disease types of the patients were analyzed.Results All 1 052 patients were accompanied by symptoms of dyspepsia, abnormal gastrointestinal function, gastroesophageal reflux and gastrointestinal bleeding. Upper gastrointestinal mucosal diseases were all detected, with a detection rate of 100.00%. Among them, 192 patients (18.25%) had only one gastroscopy diagnosis result, and 860 patients (81.75%) had two or more diagnosis results. A total of 1,881 lesions were detected, the main disease was gastric mucosal lesions, followed by esophageal mucosal lesions and duodenal mucosal lesions. The top three detected diseases were chronic non-atrophic gastritis with 932 lesions, gastric mucosal erosion and/or metaplasia of the gastrointestinal epithelium with 344 lesions, and gastric polyps with 219 lesions. Distribution characteristics of disease types in different genders: the proportion of esophageal mucosal lesions, gastric mucosal lesions and duodenal mucosal lesions in most men was higher than that in women, and the proportion of esophagitis in men was significantly higher than that in women. Distribution characteristics of disease types in different age groups: gastric polyps increase significantly in patients over 45 years old. The Kaplan-Meier survival curve showed that compared with colorectal adenoma patients who did not undergo gastroscopy, colorectal adenoma patients who underwent gastroscopy had a longer recurrence-free time (HR^ = 13.103, 95%CI: 6.589 ~ 26.057, P < 0.01).Conclusion Patients with colorectal adenoma are recommended to undergo gastroscopy to determine whether there are upper gastrointestinal mucosal diseases. People > 45 years old and men are high-risk groups. It is recommended that they have regular check-ups. Through early detection and treatment, the occurrence of upper gastrointestinal mucosal lesions in such groups can be prevented.