Benign Phyllodes Tumor and Ductal Carcinoma in situ Coexist in the Same Breast Tumor: A Case Report and Review of the Literature

Background: Breast phyllodes tumor (PT), the rare fibroepithelial mammary is composed by mesenchymal and epithelial components, only 1%~2% of which were accompanied breast cancer. The incidence non-invasive ductal carcinoma (DCIS) arising in benign PTs even rarer. There no certain treatment for it currently because low PT with DCIS. Case Description: Here, we report a 57-year-old female patient who was diagnosed situ breast. Mastectomy sentinel lymph nodes biopsy performed, endocrine therapy administrated to patient. No recurrence noted during follow-up. Conclusion: Since are prone recurrence, adjuvant should be considered comprehensively histopathological results after surgical treatment. In addition, regular follow-up recommended.