王 姗,郜 茜

胃癌（GC）是全球范围内的重大健康挑战，尽管在过去几十年中，GC在各国的发病率和死亡率总体呈下降趋势，但其发病率和死亡率均位于恶性肿瘤的第五位[1]。近年来，随着消化内镜技术的进步，早期胃癌（Early Gastric Cancer，EGC）的检测率显著提高。然而，除日本和韩国外，全球大多数地区的GC总体5年相对生存率仍维持在20%-30%[2]，而EGC的五年生存率可达90%以上。因此，早期诊断仍是提高胃癌患者生存率的关键。本文综述了胃癌的早期诊断现状，重点介绍了白光内镜、放大内镜、图像增强内镜、共聚焦激光显微内镜以及人工智能技术在内镜诊断中的应用，旨在为临床实践提供参考。

早期胃癌；内窥镜；早期诊断

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