A service of the U.S. National Library of Medicine
National Institutes of Health
Breast Cancer
URL of this page: http://www.nlm.nih.gov/medlineplus/breastcancer.html
Breast cancer affects one in eight women during their lives. Breast cancer kills more women in the United States than any cancer except lung cancer. No one knows why some women get breast cancer, but there are a number of risk factors. Risks that you cannot change include
Symptoms of breast cancer may include a lump in the breast, a change in size or shape of the breast or discharge from a nipple. Breast self-exam and mammography can help find breast cancer early when it is most treatable. Treatment may consist of radiation, lumpectomy, mastectomy, chemotherapy and hormone therapy.
Men can have breast cancer, too, but the number of cases is small.
- Age - the chance of getting breast cancer rises as a woman gets older
- Genes - there are two genes, BRCA1 and BRCA2, that greatly increase the risk. Women who have family members with breast or ovarian cancer may wish to be tested.
- Personal factors - beginning periods before age 12 or going through menopause after age 55
Symptoms of breast cancer may include a lump in the breast, a change in size or shape of the breast or discharge from a nipple. Breast self-exam and mammography can help find breast cancer early when it is most treatable. Treatment may consist of radiation, lumpectomy, mastectomy, chemotherapy and hormone therapy.
Men can have breast cancer, too, but the number of cases is small.
NIH: National Cancer Institute
MEDICAL ENCYCLOPEDIA
National Institutes of Health
- The primary NIH organization for research on Breast Cancer is the National Cancer Institute
Languages
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Start Here
- Breast Cancer
(Patient Education Institute)
- Also available in Spanish
- What You Need to Know about Breast Cancer
- Also available in Spanish
Overviews
- Basic Information about Breast Cancer(Centers for Disease Control and Prevention)
- Breast Cancer(American Academy of Family Physicians)
Latest News
- Can Eating Peanut Butter Cut Breast Cancer Risk in Later Life?(09/27/2013, HealthDay)
- Daily Tasks a Challenge for Many Older Breast Cancer Patients(09/23/2013, HealthDay)
- Women Vets May Need More Access to Breast Cancer Services(09/20/2013, HealthDay)
- Preventive Mastectomy on the Rise
(09/17/2013, HealthDay)
Four Ways to Reduce Your Breast Cancer Risk(09/13/2013, American Cancer Society)
- Mammogram Screening Under 50
- More News on Breast Cancer
Diagnosis/Symptoms
- Breast Cancer Staging(Mayo Foundation for Medical Education and Research)
- Breast Exam(Mayo Foundation for Medical Education and Research)
- Breast Lumps - Biopsy
- Also available in Spanish
- Having a Breast Biopsy: A Guide for Women and Their Families(Agency for Healthcare Research and Quality)
- Also available in Spanish
- How Is Breast Cancer Diagnosed?(American Cancer Society)
- Lymphoscintigraphy(American College of Radiology, Radiological Society of North America)
- Also available in Spanish
- MRI of the Breast(American College of Radiology, Radiological Society of North America)
- Also available in Spanish
- Ultrasound - Breast(American College of Radiology, Radiological Society of North America)
- Also available in Spanish
- Understanding Breast Changes: A Health Guide for Women
- Understanding Your Pathology Report(Living Beyond Breast Cancer)
Treatment
- Adjuvant and Neoadjuvant Therapy for Breast Cancer
- Also available in Spanish
- Breast Cancer (PDQ): Treatment
- Also available in Spanish
- Drugs Approved for Breast Cancer
- Early-Stage Breast Cancer Treatment: A Patient and Doctor Dialogue(Department of Health and Human Services, Office on Women's Health) - PDF
- Hormone Therapy for Breast Cancer
- Also available in Spanish
- MedlinePlus: Mastectomy
- Also available in Spanish
- Minimally Invasive Treatments for Breast Cancer(Society of Interventional Radiology)
- Radiation Therapy for Breast Cancer(American Society for Radiation Oncology) - PDF
- Also available in Spanish
- Surgery Choices for Women with DCIS or Breast Cancer
- Treatment of Invasive Breast Cancer by Stage(American Cancer Society)
- Also available in Spanish
- Return to top
Prevention/Screening
- Breast Cancer (PDQ): Prevention
- Also available in Spanish
- Breast Cancer (PDQ): Screening
- CDC Vital Signs: Cancer Screenings: Colorectal Cancer and Breast Cancer(Centers for Disease Control and Prevention) - PDF
- Environmental Factors and Breast Cancer Risk
- MedlinePlus: Mammography
- Also available in Spanish
- Preventive Mastectomy
- Also available in Spanish
- Prophylactic Oophorectomy: Preventing Cancer by Surgically Removing Your Ovaries(Mayo Foundation for Medical Education and Research)
- Reducing the Risk of Breast Cancer with Medicine: A Guide for Women(Agency for Healthcare Research and Quality)
- Also available in Spanish
- What Are the Risk Factors for Breast Cancer?(American Cancer Society)
- Return to top
Alternative Therapy
- Integrative and Complementary Therapies(Susan G. Komen for the Cure) - PDF
- Return to top
Nutrition
- Nutrition(Living Beyond Breast Cancer)
- Return to top
Coping
- Coping with a Cancer Diagnosis(Susan G. Komen for the Cure) - PDF
- Also available in Spanish
- For Women Facing a Breast Biopsy(American Cancer Society)
- Also available in Spanish
- Genetic Testing for Breast Cancer: Psychological and Social Impact(Mayo Foundation for Medical Education and Research)
- Life After Treatment(Susan G. Komen for the Cure) - PDF
- Your Body After Breast Cancer(American Cancer Society)
- Return to top
Disease Management
- Lifestyle Changes After Breast Cancer Treatment(American Cancer Society)
- Sleeping Problems: Insomnia and Fatigue(Living Beyond Breast Cancer)
- What Happens After Treatment for Breast Cancer?(American Cancer Society)
- Return to top
Specific Conditions
- Breast Cancer - Metaplastic(American Society of Clinical Oncology)
- Breast Cancer -- Inflammatory(American Society of Clinical Oncology)
- Diagnosis: Metastatic Breast Cancer...What Does It Mean for You?(Metastatic Breast Cancer Network) - PDF
- Ductal Carcinoma in Situ (DCIS)(Mayo Foundation for Medical Education and Research)
- HER2-Positive Breast Cancer: What Is It?(Mayo Foundation for Medical Education and Research)
- Inflammatory Breast Cancer
- Also available in Spanish
- Invasive Ductal Carcinoma(College of American Pathologists) - PDF
- Invasive Lobular Carcinoma(College of American Pathologists) - PDF
- Lobular Carcinoma In Situ (LCIS)(Mayo Foundation for Medical Education and Research)
- Paget Disease of the Breast
- Also available in Spanish
- Recurrent Breast Cancer(Mayo Foundation for Medical Education and Research)
- Triple Negative Breast Cancer(Susan G. Komen for the Cure) - PDF
- Types of Breast Cancers(American Cancer Society)
- Return to top
Related Issues
- Abortion, Miscarriage, and Breast Cancer Risk
- Antiperspirants/Deodorants and Breast Cancer
- Also available in Spanish
- Axillary Lymph Nodes and Breast Cancer(Susan G. Komen for the Cure) - PDF
- Also available in Spanish
- Breast Cancer and Bone Loss(Hormone Health Network)
- Breast Cancer and Women with Disabilities(Centers for Disease Control and Prevention)
- Also available in Spanish
- Diethylstilbestrol (DES) and Cancer
- Lymphedema: What Every Woman with Breast Cancer Should Know(American Cancer Society) - PDF
- Menopausal Hormone Therapy and Cancer
- Also available in Spanish
- Oral Contraceptives and Cancer Risk
- Also available in Spanish
- Questions and Answers about Breast Cancer, Bone Metastases, and Treatment-Related Osteoporosis(Bone and Cancer Foundation) - PDF
- Questions to Ask Your Doctor(Metastatic Breast Cancer Network)
- Reproductive History and Breast Cancer Risk
- Also available in Spanish
- Sexuality After Breast Cancer(American Cancer Society)
- Also available in Spanish
- What Breast Cancer Survivors Need to Know about Osteoporosis
- Young Women and Breast Cancer(Susan G. Komen for the Cure) - PDF
- Also available in Spanish
- Return to top
Health Check Tools
- Breast Cancer Risk Questionnaire(Siteman Cancer Center)
- Return to top
Tutorials
- Breast Cancer
(National Cancer Institute)
- Breast Cancer(Patient Education Institute)
- Also available in Spanish
- Breast Lumps - Biopsy(Patient Education Institute)
- Also available in Spanish
- Return to top
Videos
- Breast Cancer Treatment(OR-Live) - Thomas Jefferson University Hospital, Philadelphia, PA, 10/18/2007
- Four Methods of Treating Breast Cancer
- Genetic Risk Factors
- If I Had - A Family History of Breast Cancer(Insidermedicine)
- If I Had - A Lump in My Breast and Needed an Ultrasound Evaluation(Insidermedicine)
- If I Had - A New Lump in My Breast(Insidermedicine)
- If I Had - Breast Cancer and Required Evaluation with Molecular Testing(Insidermedicine)
- If I Had - Breast Cancer and Was in Remission(Insidermedicine)
- If I Had - Breast Cancer in One Breast and Had Concerns About the Other Breast(Insidermedicine)
- If I Had - Metastatic Breast Cancer(Insidermedicine)
- If I Had - Unilateral Nipple Discharge(Insidermedicine)
- Lymphatics and the breast - Encyclopedia
- Also available in Spanish
- Return to top
Anatomy/Physiology
- Understanding Cancer Series: Estrogen Receptors/SERMs
- Return to top
Financial Issues
- Insurance and Other Financial Issues Related to Breast Cancer Care(Susan G. Komen for the Cure)
- Paying for Breast Cancer Screening(American Cancer Society)
- Return to top
Clinical Trials
- ClinicalTrials.gov: Breast Neoplasms
- ClinicalTrials.gov: Carcinoma, Ductal, Breast
- ClinicalTrials.gov: Hereditary Breast and Ovarian Cancer Syndrome
- ClinicalTrials.gov: Inflammatory Breast Neoplasms
- Return to top
Genetics
- BRCA1 and BRCA2: Cancer Risk and Genetic Testing
- Breast and Ovarian Cancer and Family History Risk Categories(Centers for Disease Control and Prevention)
- Breast and Ovarian Cancer and Increased Risk Family History Patterns(Centers for Disease Control and Prevention)
- Genetic Counseling and Evaluation for BRCA1/2 Testing(Centers for Disease Control and Prevention)
- Genetics Home Reference: Breast cancer
- Genetics Home Reference: Li-Fraumeni syndrome
- Hereditary Breast and Ovarian Cancer(Centers for Disease Control and Prevention)
- Learning about Breast Cancer
- Return to top
Research
- Breast Cancer
- Breast Cancer and the Environment(Institute of Medicine) - PDF
- Breast Cancer Patients with High Density Mammograms Do Not Have Increased Risk of Death
- For Some Breast Cancers, New Drug May Be Treatment Option
- Sister Study: A Study of the Environmental and Genetic Risk Factors for Breast Cancer
- Ten Years of Tamoxifen Reduces Breast Cancer Recurrences, Improves Survival
- Treatment Options for HER2-Positive Breast Cancer Expand and Evolve
- Also available in Spanish
- What's New in Breast Cancer Research and Treatment?(American Cancer Society)
- Women with Breast Cancer Micrometastases in Their Sentinel Lymph Nodes May Not Need Axillary Dissection
- Return to top
Journal Articles
References and abstracts from MEDLINE/PubMed (National Library of Medicine)
- Article: JAMA patient page. Tamoxifen update.
- Article: Characteristics associated with differences in survival among black and white...
- Article: Contralateral prophylactic mastectomy for breast cancer: addressing peace of mind.
- Breast Cancer -- see more articles
- Genetics of Breast Cancer -- see more articles
- Paget's Disease of Breast -- see more articles
- Return to top
Dictionaries/Glossaries
- Breast Cancer Types: What Your Type Means(Mayo Foundation for Medical Education and Research)
- Deciphering Medspeak: Breast Cancer(Medical Library Association) - PDF
- Dictionary of Cancer Terms
- Also available in Spanish
- Return to top
Directories
- Find a Radiation Oncologist(American Society for Radiation Oncology)
- Find an Oncologist(American Society of Clinical Oncology)
- National Breast and Cervical Cancer Early Detection Program (NBCCEDP): Find a Screening Provider Near You(Centers for Disease Control and Prevention)
- Organizations That Offer Support Services
- Return to top
Organizations
- American Cancer Society
- National Cancer Institute
- Also available in Spanish
- Return to top
Law and Policy
- Breast and Cervical Cancer Prevention and Treatment Act of 2000(Centers for Disease Control and Prevention)
- Women's Health and Cancer Rights Act(Centers for Medicare & Medicaid Services) - PDF
- Return to top
Statistics
- Breast Cancer Rates by Race and Ethnicity(Centers for Disease Control and Prevention)
- Breast Cancer Rates by State(Centers for Disease Control and Prevention)
- Breast Cancer Risk in American Women
- Breast Cancer Trends(Centers for Disease Control and Prevention)
- CDC Vital Signs: Breast Cancer(Centers for Disease Control and Prevention)
- Return to top
MedlinePlus Magazine
- 6 Common Cancers - Breast Cancer
- All in the Family: The Sister Study
- Braving Breast Cancer: Just Do It!
- Breast Cancer Basics and You: Detection and Diagnosis
- Breast Cancer Basics and You: Introduction
- Breast Cancer Basics and You: Staging and Treatment
- Breast Cancer: Match of Her Life
- Can Prolonged Stress Affect Whether Breast Cancer Returns?
- Preventing Breast Cancer: Making Progress
- Quiz: How Much Do You Know about Breast Cancer?
- The Sister Study: Breast Cancer as a Family Affair: One Sister's Story
- Return to top
Children
- Breast Cancer(Nemours Foundation)
- Also available in Spanish
- Return to top
Teenagers
- Is Breast Cancer a Threat in the Teen Years? (For Parents)(Nemours Foundation)
- Also available in Spanish
- Return to top
Men
- MedlinePlus: Male Breast Cancer
- Also available in Spanish
- Return to top
Seniors
- Breast Cancer
- Return to top
Patient Handouts
- After chemotherapy - discharge
- Also available in Spanish
- Breast biopsy -- stereotactic
- Also available in Spanish
- Breast biopsy -- ultrasound
- Also available in Spanish
- Breast cancer
- Also available in Spanish
- Breast lump
- Also available in Spanish
- Breast MRI scan
- Also available in Spanish
- Breast PET scan
- Also available in Spanish
- Breast radiation - discharge
- Also available in Spanish
- Breast self exam
- Also available in Spanish
- Breast ultrasound
- Also available in Spanish
- Chest radiation - discharge
- Also available in Spanish
- Lymphedema
- Also available in Spanish
- Mammography
- Also available in Spanish
- Understanding Chemotherapy
(National Cancer Institute) - PDF
- What to Know about Brachytherapy (A Type of Internal Radiation Therapy)
- What to Know about External Beam Radiation Therapy
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