Abstract:Objective To explore the application value of gastrointestinal ultrasonography combined with echoendoscope in the T stage of gastric cancer in the elderly patients.Methods A retrospective analysis was conducted on the clinical data of 102 elderly gastric cancer patients aged 60~78 years old from January 2016 to December 2021, and gastrointestinal ultrasonography and echoendoscope were examined one week before surgery. The clinical values of gastrointestinal ultrasonography, echoendoscope, gastrointestinal ultrasonography combined with echoendoscope in T stage of elderly patients were compared by observing the preoperative imaging diagnostic data of different examination methods, and taking postoperative pathological T staging as the gold standard for diagnosis.Results The overall diagnostic accuracy of gastrointestinal ultrasonography for T stage of elderly gastric cancer was 70.59%, the accuracy of echoendoscope diagnosis was 73.53%, and the diagnostic accuracy of gastrointestinal ultrasonography combined with echoendoscope was 85.29%. In the T stage of elderly gastric cancer, the diagnostic accuracy of gastrointestinal ultrasonography combined with echoendoscope was significantly higher than that of gastrointestinal ultrasonography and echoendoscope alone. For T1 and T2 elderly gastric cancer, the diagnostic accuracy of combined examination was higher than that of echoendoscope and higher than that of gastrointestinal ultrasonography, but there were no significant differences (P > 0.05). For T3 elderly gastric cancer, gastrointestinal ultrasonography had the same diagnostic accuracy as echoendoscope, but was lower than that of combined examination, but there were no significant differences (P > 0.05). For T4 elderly gastric cancer, the diagnostic accuracy of combined examination was higher than that of gastrointestinal ultrasonography, but there was no significant difference (P > 0.05), and significantly higher than that of echoendoscope (P < 0.05).Conclusion Gastrointestinal ultrasonography combined with echoendoscope significantly improve the overall diagnostic accuracy of T stage of gastric cancer in the elderly. For stage T1 and T2 elderly gastric cancer, echoendoscope can be selected; For T3 and T4 gastric cancer, combined examination can be selected to make up for the shortcomings of single examination and provide more accurate guidance for the selection of clinical surgical plan.