Jie Jie Hu,1,* Chengdong Qin,1,* Siyuan Liu,1,2 Meizhen Zhu,1 Xianghou Xia,1 Chenlu Liang,1 Jiefei Mao,1 Fanrong Zhang,1 Yang Yu1 

1Breast Cancer Department, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, 310022, People’s Republic of China; 2Postgraduate Training Base Alliance of Wenzhou Medical University, Hangzhou, Zhejiang, 310022, People’s Republic of China

*These authors contributed equally to this work

Correspondence: Yang Yu, Breast Cancer Department, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, 310022, People’s Republic of China, Email yuyangkaiyu@163.com

Background: Oncoplastic breast-conserving surgery (OBCS) has emerged as a pivotal approach in the management of breast cancer, ensuring both oncological safety and aesthetic outcomes. However, challenges persist, particularly in upper inner quadrant (UIQ) tumors, where achieving satisfactory cosmetic results while preserving oncological integrity remains intricate.
Methods: 15 patients with UIQ breast cancer received OBCS using a pedicled pectoralis major myofascial flap (PMMF). All medical records, preoperative imaging findings, and post-operative data were gathered retrospectively.
Results: This study showed good cosmetic outcomes after OBCS of the upper inner pole and the patients were satisfied with the results. There were no recurrences or metastases in any of the patients.
Conclusion: PMMF as a technique is reliable blood supply, easy to master, no need for additional incision, and minimal surgical trauma and functional impact.

Keywords: breast-conserving surgery, upper inner quadrant, breast cancer, pedicled pectoralis major myofascial flap