The sentinel node (SN) is defined as the first draining node from the primary lesion and it has proven to be a good indicator of the metastatic status of regional lymph nodes in solid tumors.

• 摘要：信号淋巴结（SN）被定义为原发病灶的首站引流淋巴结，是判断实体瘤区域淋巴结转移的良好指征。