早期胃癌的内镜诊断北京友谊医院（１０００５０）于永征内镜的临床广泛应用为消化道肿瘤，尤其是早期胃癌的诊断创造了有利条件。近年来电子胃镜、超声胃镜的应用，大块活检取材技术的开发，使早期癌的检出率不断提高。日本早期胃癌的检出率已由１９６６年的２５％增至５... Endoscopic Diagnosis of Early Gastric Cancer Beijing Friendship Hospital (100050) Yu Yongzheng’s extensive clinical use of endoscopy has created favorable conditions for the diagnosis of digestive tract tumors, especially early gastric cancer. In recent years, the application of electronic gastroscopes, ultrasound gastroscopes, and the development of large-scale biopsy techniques have led to an increase in the detection rate of early cancers. The detection rate of early gastric cancer in Japan has increased from 25% in 1966 to 5...