患有乳腺癌史的妇女再发另一侧乳腺癌的机会较无癌肿史者高出3倍，1998年Oxford协作组报道三苯氨胺治疗可降低30％对侧乳腺癌（CBC）的发生率。作者综合分析18篇有关三苯氧胺与CBC关系的文章。分析结果如附表所示。在18篇报道中，13篇资料显示三苯氧胶的应用可降低CBC发生率。9 Women with a history of breast cancer have a three times higher chance of recurrence of breast cancer on the other side than those with no history of cancer. In 1998, the Oxford Collaboration reported that trifamine treatment can reduce 30% of contralateral breast cancer (CBC) Incidence. The author comprehensively analyzed 18 articles on the relationship between tamoxifen and CBC. The results of the analysis are shown in the attached table. Of the 18 reports, 13 data showed that the use of triphenyl oxime can reduce the incidence of CBC. 9