术前评估胃癌淋巴结转移有助于选择合理的淋巴结切除范围。CT判定胃癌淋巴结转移的准确性为70％左右,该效果优于磁共振、正电子发射断层显像(PET),而劣于内镜超声(EUS)。许多分子生物学标记物能够预测胃癌淋巴结转移,多个标记物的联合检测效果更好。前哨淋巴结、数学方法也可用于预测胃癌淋巴结转移。腹腔镜、量子点技术具有很好的应用前景。 Preoperative evaluation of gastric cancer lymph node metastasis helps to select a reasonable range of lymph node resection. The accuracy of CT in determining gastric cancer lymph node metastasis is about 70%, which is superior to magnetic resonance, positron emission tomography (PET) and inferior to endoscopic ultrasonography (EUS). Many molecular biology markers can predict lymph node metastasis of gastric cancer, the combined detection of multiple markers better. Sentinel lymph nodes, mathematical methods can also be used to predict gastric cancer lymph node metastasis. Laparoscopy, quantum dot technology has a good prospect.