前哨淋巴结的定义是引流肿瘤部位区域淋巴系统的第一枚淋巴结,将其显示后切除活检,以判断区域淋巴结有无转移,即前哨淋巴结活检技术(sentinel lymph node biopsy,SLNB)。Caba-nas于1977年首先用于阴茎癌100例,提出若前哨淋巴结阴性可免于淋巴结清扫。随后,Morton将其用于黑色素 Sentinel lymph nodes are defined as the first lymph node that drains the lymphatic system in the area of ​​the tumor, which is resected and biopsied to determine the presence or absence of regional lymph node metastasis, ie sentinel lymph node biopsy (SLNB). Caba-nas first used in penile cancer in 1977, 100 cases, suggesting that if the sentinel lymph node-negative lymph node dissection can be avoided. Morton then used it for melanin