TY - JOUR
AR - SCR-2022-11-105
TI - Benign Phyllodes Tumor and Ductal Carcinoma in situ Coexist in the Same Breast Tumor: A Case Report and Review of the Literature
AU - Chiseng, Lei
AU - Jiamei, Hu
AU - Yuan, Li
AU - Yude, Xie
AU - Jie, Zhang
AU - Ningxia, Wang
AU - Yuhua, Ma
AU - Shaohua, Qu
JO - Surgical Case Reports
PY - 2022
DA - Fri 25, Nov 2022
SN - 2613-5965
DO - http://dx.doi.org/10.31487/j.SCR.2022.11.05
UR - https://www.sciencerepository.org/benign-phyllodes-tumor-and_SCR-2022-11-105 
KW - Phyllodes tumor, ductal carcinoma in situ, breast cancer, mastectomy
AB - Background: Breast phyllodes tumor (PT), the rare fibroepithelial mammary tumor is composed by mesenchymal and epithelial components, only 1%~2% of which were accompanied by epithelial breast cancer. The incidence of non-invasive ductal carcinoma (DCIS) arising in benign PTs is even rarer. There is no certain treatment for it currently because of the low incidence of PT with DCIS. 
Case Description: Here, we report a 57-year-old female patient who was diagnosed with ductal carcinoma in situ arising in a benign phyllodes tumor of the breast. Mastectomy and sentinel lymph nodes biopsy were performed, and endocrine therapy was administrated to the patient. No recurrence was noted during follow-up.
Conclusion: Since PTs are prone to recurrence, adjuvant therapy should be considered comprehensively by the histopathological results after surgical treatment. In addition, regular follow-up is recommended.