哨兵淋巴结活检是观察第一个引流肿瘤的淋巴结，除冰冻切片外，接触印片细胞学分析是另一种检查方法，但更快速。作者前瞻性比较印片法和石蜡切片结果。注射蓝色染料后，第一个在淋巴链蓝染的淋巴结即为哨兵淋巴结。取出后，清除周围脂肪，淋巴缩小于8mm者切成两半，如大于8mm Sentinel lymph node biopsy is the observation of the first lymph node that drains the tumor. In addition to frozen sections, contact print cytology analysis is another method, but it is faster. The authors prospectively compared print and paraffin section results. After the blue dye has been injected, the first lymph node in the lymph nodes is the sentinel lymph node. After removal, remove the surrounding fat. If the lymph is reduced to 8mm, cut it in half, such as more than 8mm.