Abstract | BACKGROUND: METHOD: The retrospective, population-based cohort study included 1369 stage I-II (T1-2 N0-1 M0) male breast cancer patients from the SEER database (2000-2018). The patients were grouped in two groups: BCT group and mastectomy group, according to surgical and radiation therapy. Kaplan-Meier method and univariable Cox proportional hazard analysis were used to compare overall survival (OS) and breast cancer-specific survival (BCSS) between two treatment groups. Propensity score matching (PSM) was performed to balance the confounding factors. RESULTS: Of the 1369 men, 97 (7%) patients received BCT, 1272 (93%) received mastectomy alone. The 5- and 10-year OS rates were 92.3% and 80.7% for BCT group compared with 80.4% and 61.4% for mastectomy group. The 5- and 10-year BCSS rates were 96.5% and 93.9% for patients undergoing BCT, as compared with 93.1% and 84.4% for patients undergoing mastectomy. Compared with mastectomy group, BCT group showed improved OS (hazard ratio [HR], 0.294; 95% CI 0.138-0.623, P = .002) and BCSS (hazard ratio [HR], 0.182; 95% CI 0.040-0.820, P = .027). Of the 791 patients with T1 stage, BCT showed insignificant association with OS (hazard ratio [HR], 0.555; 95% CI 0.207-1.488, P = .242) and BCSS (hazard ratio [HR], 1.217; 95% CI 0.171-8.675, P = .844). CONCLUSION: The results of this cohort study suggest that BCT is at least equivalent to mastectomy in male breast cancer patients. The underlying mechanism of this association needs further research.
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Authors | Yushuang He, Xinyi Gao, Jierong Wu, Xuelu Li, Zhenhai Ma |
Journal | Clinical breast cancer
(Clin Breast Cancer)
Vol. 22
Issue 5
Pg. 410-417
(07 2022)
ISSN: 1938-0666 [Electronic] United States |
PMID | 35473920
(Publication Type: Journal Article)
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Copyright | Copyright © 2022. Published by Elsevier Inc. |
Topics |
- Breast Neoplasms
(pathology, surgery)
- Breast Neoplasms, Male
(surgery)
- Cohort Studies
- Humans
- Male
- Mastectomy
- Mastectomy, Segmental
- Retrospective Studies
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