RESUMEN
Introduction: This study aimed to assess whether follow-up of patients with operative breast cancer at cancer centres (CCs) improved prognosis compared with follow-up by family physicians (FPs). Methods: The study included 254 patients who relapsed within 7 years from the first postoperative period. The patients were divided into two groups according to the follow-up facility: the CC and FP groups (the follow-up of patients was structured in the same way between FPs and CCs). There are 146 and 108 cases of recurrence in the CC and FP groups, respectively. The analysis targets of the two groups were determined using the propensity matching method based on the following 7 factors: oestrogen receptor status, progesterone receptor status, human epidermal growth factor receptor 2 status, St. Gallen category, menopausal status, surgical procedure, and receipt of postoperative chemotherapy at the time of surgery. Overall survival (OS) in both groups was analysed using the Kaplan-Meier method and compared using the log-rank test. Results: Overall, 97 patients each in the CC and FP groups who relapsed were analysed using the propensity matching method. The median recurrence-free survival periods were 1,676 and 994 days in the FP and CC groups, respectively, and were significantly longer in the FP group. However, the median OS starting from the day of surgery was 3,424 and 2,794 days in the FP and CC groups, respectively, with no significant difference. Conclusion: This study revealed that regular follow-up at CCs did not improve survival compared with regular follow-up by FPs.