【摘要】 食管胃结合部腺癌（AEG）是一种特殊类型的肿瘤，其发病位置特殊，区别于胃癌和食管癌，具有独特的生物学行为。淋巴结转移是AEG最常见的转移途径之一，淋巴结转移可向口侧的下纵隔淋巴结及肛侧的腹腔淋巴结发生转移，因此，AEG病人行根治性手术时除了常规清扫腹腔淋巴结外，下纵隔淋巴结也应该被列入清扫范围，但是对于下纵隔淋巴结清扫的适用人群、清扫范围和手术入路目前仍缺乏高级别的证据支持。由于目前仍然存在争议，加之下纵隔淋巴结位置较高，清扫难度较大，一般只在部分有经验的中心开展。更多还原

【Abstract】 Adenocarcinoma of esophagogastric junction(adenocarcinoma of esophagogastric junction, AEG) is aspecial type of tumor with a special location, different fromgastric cancer and esophageal cancer, and with uniquebiological behavior. Lymph node metastasis is one of the mostcommon metastatic routes of AEG, and lymphatic metastasiscan occur to the lower mediastinal lymph nodes on the oralside and the abdominal lymph nodes on the anal side.Therefore,in addition to the routine dissection of abdominallymph nodes, the lower mediastinal lymph nodes should beincluded in the scope of the dissection for patients with AEG undergoing radical surgery. However, there is still a lack ofhigh-level evidence to support the applicability of lowermediastinal lymph node dissection, the scope of dissection,and the surgical approach, and therefore there is stillcontroversy, coupled with the fact that the lower mediastinallymph nodes are located at a high level, which makesdissection difficult and is usually performed only in someexperienced centers.更多还原