Important: This page is general information, not medical advice. It does not recommend or prescribe any treatment. Always consult your doctor or pharmacist before starting, stopping or changing any medicine.
About Male Breast Cancer
Although breast cancer is much more common in women, men can get it too. It happens most often to men between the ages of 60 and 70.
Breast lumps usually aren't cancer. However, most men with breast cancer have lumps. Other breast symptoms can include:
- Dimpled or puckered skin
- A red, scaly nipple or skin
- Fluid discharge
Risk factors for male breast cancer include exposure to radiation, a family history of breast cancer, and having high estrogen levels, which can happen with diseases like cirrhosis or Klinefelter syndrome.
Treatment for male breast cancer is usually a mastectomy, which is surgery to remove the breast. Other treatments include radiation, chemotherapy and/or hormone therapy.
It sits within Cancers and Men.
The lead U.S. institute for this subject is the National Cancer Institute.
When to speak to someone. Reading about a topic cannot tell you whether it applies to you. Speak to a doctor or pharmacist if symptoms are severe, sudden, getting worse, or simply not going away — and seek emergency care immediately for chest pain, breathing difficulty, sudden weakness or confusion, or a serious allergic reaction.
Research on Male Breast Cancer
1,255 studies areregistered for this condition on ClinicalTrials.gov, the U.S. National Library of Medicine's public registry. A selection is below — the links go straight to the registry entry, not to a summary of ours.
What a registered study does and does not mean. Registration means a study exists and has been declared publicly. It says nothing about whether the treatment being tested works, is safe, or is available to you. Many studies find no benefit — that is what research is for. Never seek out an experimental treatment on the strength of a registry entry alone.
Research currently under way
- Targeted Therapy Directed by Genetic Testing in Treating Patients With Advanced Refractory Solid Tumors, Lymphomas, or Multiple Myeloma (The MATCH Screening Trial)National Cancer Institute (NCI)
- Study of GVV858 as a Single Agent or in Combination With Endocrine Therapy in Patients With HR+/HER2- Breast Cancer and Other Advanced Solid TumorsNovartis Pharmaceuticals
- Social Health, Activity Behaviors, and Quality of Life Among Young Adult Cancer SurvivorsUniversity of Southern California
- Natural History Study of Early Life Exposures in Agriculture (ELEA)National Cancer Institute (NCI)
- Study of AB598 Monotherapy and Combination Therapy in Participants With Advanced CancersArcus Biosciences, Inc.
- The Cancer Connected Access and Remote Expertise Beyond Walls Program to Provide In-Home Cancer Treatment and Improve Treatment Satisfaction in Cancer Patients Living in the Florida Panhandle and Surrounding AreasMayo Clinic
Research already completed
- African Cancer Genome: GMDFox Chase Cancer Center
Study data from ClinicalTrials.gov, a service of the U.S. National Library of Medicine. Retrieved 2026-07-30. Registry entries are supplied by study sponsors and investigators; ClinicalTrials.gov does not verify their scientific validity. PocketsInfo is not affiliated with, and not endorsed by, the NLM or the NIH.
Where to read more
Rather than paraphrase, we point you to the primary sources. Every link below is to a government health agency, a national institute or a recognised medical body — grouped by what you are trying to find out.
Start Here
- Breast Cancer in MenSusan G. Komen for the Cure
- Breast Cancer in MenNational Cancer Institute
- Breast Cancer in MenAmerican Cancer Society
- Male Breast CancerMayo Foundation for Medical Education and Research
Diagnosis and Tests
- Breast BiopsyNational Library of Medicine
- Early Detection, Diagnosis, and Staging of Breast Cancer in MenAmerican Cancer Society
- HER2 Tumor Marker TestNational Library of Medicine
- Tumor Marker TestsNational Library of Medicine
Treatments and Therapies
- Men With Breast Cancer Need More Treatment Options and Access to Genetic CounselingFood and Drug Administration
Genetics
- Breast cancer: MedlinePlus GeneticsNational Library of Medicine
Statistics and Research
- Advances in Breast Cancer ResearchNational Cancer Institute
Clinical Trials
- ClinicalTrials.gov: Breast Neoplasms, MaleNational Institutes of Health
Medical subject headings
Clinicians and researchers index this subject under Breast Neoplasms, Male. These are the terms to use when searching medical literature.
This page is built from the MedlinePlus health topic record for Male Breast Cancer, a service of the U.S. National Library of Medicine (NLM), National Institutes of Health. Information is from MedlinePlus.gov. PocketsInfo is not affiliated with, and is not endorsed by, the NLM or the NIH. Retrieved 30 July 2026.