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近年,在日本许多特定的胃癌诊治机构发现的早期胃癌(EGC)已占胃癌总例数的50％以上。EGC检出数量显著增加,主要是放射影像和内窥镜诊断的进步所致。特别应加以强调的是两者在检查方法上起到相互补充的作用。从胃癌的诊断历史上看,认为内镜优于放射诊断可能带有偏见。在放射诊断上双重对比法甚至可以检出小于 1cm的EGC。另外,日本大屏幕系统的建立使胃癌的诊断比症状期的病人检出更方便。在内镜诊断方面,检测小于
In recent years, early gastric cancer (EGC) found in many specific gastric cancer diagnosis and treatment institutions in Japan has accounted for more than 50% of the total number of gastric cancer cases. The number of detected EGCs increased significantly, mainly due to advances in radiographic and endoscopic diagnosis. In particular, it should be emphasized that the two complement each other in the inspection method. From the history of the diagnosis of gastric cancer, it is considered that endoscopy may be prejudicial to radiological diagnosis. The dual contrast method can even detect EGC less than 1 cm in radiological diagnosis. In addition, the establishment of a large-screen system in Japan makes the diagnosis of gastric cancer more convenient than the detection of patients with symptoms. In endoscopic diagnosis, detection is less than