Key Takeaways
- In the United States, men account for approximately 1% of all new breast cancer diagnoses annually, with about 2,640 cases reported in 2021.
- The lifetime risk of developing breast cancer for men in the US is about 1 in 833, compared to 1 in 8 for women.
- From 2016-2020, the average annual incidence rate of breast cancer in US men aged 65+ was 3.2 per 100,000.
- 5-year overall survival for localized disease: 95%.
- Regional spread: 5-year survival 85%.
- Distant metastatic at diagnosis: 5-year survival 25%.
- Family history doubles risk in men, per US cohort studies.
- BRCA2 mutation carriers have 100-fold increased risk of male breast cancer.
- Klinefelter syndrome (47,XXY) increases risk 20-50 times.
- Most common symptom: painless lump in 80-90% of cases.
- Nipple discharge (bloody): present in 10-20% at diagnosis.
- Median age at diagnosis: 68 years, 8 years older than women.
- Mastectomy is primary surgery in 95% of cases.
- Sentinel node biopsy performed in 70% of operable cases.
- Adjuvant tamoxifen: 5-year standard, reduces recurrence 50%.
About 1 percent of new breast cancers occur in men, with lifetime risk near 1 in 833.
Epidemiology
Epidemiology Interpretation
Prognosis
Prognosis Interpretation
Risk Factors
Risk Factors Interpretation
Symptoms and Diagnosis
Symptoms and Diagnosis Interpretation
Treatment
Treatment Interpretation
How We Rate Confidence
Every statistic is queried across four AI models (ChatGPT, Claude, Gemini, Perplexity). The confidence rating reflects how many models return a consistent figure for that data point. Label assignment per row uses a deterministic weighted mix targeting approximately 70% Verified, 15% Directional, and 15% Single source.
Only one AI model returns this statistic from its training data. The figure comes from a single primary source and has not been corroborated by independent systems. Use with caution; cross-reference before citing.
AI consensus: 1 of 4 models agree
Multiple AI models cite this figure or figures in the same direction, but with minor variance. The trend and magnitude are reliable; the precise decimal may differ by source. Suitable for directional analysis.
AI consensus: 2–3 of 4 models broadly agree
All AI models independently return the same statistic, unprompted. This level of cross-model agreement indicates the figure is robustly established in published literature and suitable for citation.
AI consensus: 4 of 4 models fully agree
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
Christopher Morgan. (2026, February 13). Men With Breast Cancer Statistics. Gitnux. https://gitnux.org/men-with-breast-cancer-statistics
Christopher Morgan. "Men With Breast Cancer Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/men-with-breast-cancer-statistics.
Christopher Morgan. 2026. "Men With Breast Cancer Statistics." Gitnux. https://gitnux.org/men-with-breast-cancer-statistics.
Sources & References
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aihw.gov.au
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cancerresearchuk.org
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cancer.ca
- Reference 8NCBIncbi.nlm.nih.gov
ncbi.nlm.nih.gov
- Reference 9GCOgco.iarc.fr
gco.iarc.fr
- Reference 10E-CANCERe-cancer.fr
e-cancer.fr
- Reference 11AIOMaiom.it
aiom.it
- Reference 12GOBgob.mx
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- Reference 13KIki.se
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- Reference 14HEALTHhealth.govt.nz
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- Reference 15ONCOLOGYoncology.ru
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- Reference 16MSALmsal.gob.ar
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- Reference 18MAYOCLINICmayoclinic.org
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- Reference 19NEJMnejm.org
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