Abstract
Aim: To compare clinicopathological characteristics and prognoses of medullary carcinoma (MC) and invasive ductal carcinoma (IDC) of the breast. Patients & methods: We screened patients from the SEER database. Kaplan–Meier analysis and Cox proportional hazards models were used to investigate influence on survival. Propensity score matching analysis was performed to reduce possible bias. Results: Compared with IDC, MC tended to be younger patients, poor differentiation, negative estrogen receptor and progesterone receptor and chemotherapy. Better overall survival and disease-specific survival were observed in MC patients than in IDC patients. It shared several prognostic factors. Worse disease-specific survival was observed in IDC patients than in MC patients (HR: 1.590; 95% CI: 1.475–1.714; p < 0.001). Conclusion: The clinical features and outcomes had evident differences between MC and IDC patients. These findings will provide more information for the prognosis of MC and IDC.
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