目的初步探讨内乳前哨淋巴结活检方法和临床价值。方法先对20例内象限的乳腺癌患者采用“双染法”内乳前哨淋巴结定位;然后应用经“肋间隙法”行内乳前哨淋巴结活检。结果发现两例内乳前哨淋巴结转移,其中有一仅内乳淋巴结转移。结论内乳前哨淋巴结活检对特定的乳腺癌患者可能有重要的临床价值,值得进一步研究。 Objective To investigate the method and clinical value of sentinel lymph node biopsy in the internal mammary duct. Methods Twenty cases of intractable breast cancer were treated with “double staining” and internal sentinel lymph node localization. Then the sentinel lymph node biopsy was performed by “intercostal space method”. Outcomes were found in two cases of sentinel lymph node metastases, of which there was only internal mammary lymph node metastasis. Conclusions Intra-sentineinal lymph node biopsy may have important clinical value for specific breast cancer patients and warrant further study.