The detection of M 4G 3 MoAb may play an important role in the diagnosis of occult breast cancer with the lymphatic metastasis as first symptom. Whole organ section examination was needed to cooperate with M 4G 3 assay.

• 抗人乳腺癌单克隆抗体M4 G3检测在以腋淋巴结转移癌为首发症状的隐性乳腺癌的诊断中有重要临床价值 ,还需辅以全乳腺大切片检查配合诊断。