The Prevalence and Influencing Factors of Post-Mastectomy Pain Syndrome Among Breast Cancer Patients in Tertiary Hospitals in China: A Cross-Sectional Study

<i>Background</i>: Surgical treatment is a common method for breast cancer, with many advantages, such as low recurrence rate and high lesion clearance rate. However, due to the traumatic operation, patients are prone to various complications after treatment, such as postoperative pain, which will not only have a negative impact on patients' physical and mental health, but also affect their postoperative recovery. <i>Objective</i>: To investigate the current prevalence of Post-Mastectomy Pain Syn-drome in patients with breast cancer in tertiary hospitals in China and analyze the influencing factors, so as to provide evidence for postoperative pain. <i>Methods</i>: This study was a cross-sectional study. Breast cancer patients followed up in the outpatient department of oncology in a tertiary hospital in Sichuan Province from February 2024 to December 2024 were investigated by convenience sampling method. They were grouped according to whether they had pain syndrome or not, and SPSS 27.0 was used for statistical analysis, with P < 0.05 as statistical difference. <i>Results</i>: The results of this study showed that the incidence of postoperative pain syndrome in breast cancer patients was 42.9%, and the mode of operation and postoperative adjuvant radiotherapy were the influencing factors for the occurrence of postoperative pain syndrome in breast cancer patients. <i>Conclusion</i>: The incidence of postoperative pain syndrome in patients with breast cancer is relatively high. Surgical methods and postoperative adjuvant radiotherapy are the factors affecting the occurrence of postoperative pain syndrome in patients with breast cancer. It is necessary to formulate scientific and effective preventive measures according to the actual situation of patients to alleviate the pain of patients.