Keywords Sentinel lymph nodes;Micrometastases;Lymphatic drainage;Metastases;Rectal cancer;Mesorectum;Lymph nodes;Lymph node revealing solution;

• 前哨淋巴结;微转移;淋巴引流;转移;直肠癌;直肠系膜;淋巴结;淋巴结显示液;