Breast cancer, which is the most common type of cancer, affects nearly 270,000 people in the U.S. each year. Here you will find information on the symptoms, causes, stages, and treatment of breast cancer.

Breast Cancer Basics

Mature woman doing self breast exam at home
Early Breast Cancer Signs and Symptoms

Metastasic Breast Cancer

Person stands for a radiology session.
Signs and Symptoms of Metastatic Breast Cancer
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What Is Metastatic Breast Cancer?
Woman with cancer looking out the window.
How Is Metastatic Breast Cancer Treated?

Explore Breast Cancer

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How Your Neighborhood Might Affect Your Breast Cancer Outcome
hormonal IUD
New Study Links Hormonal IUDs to Higher Risk of Breast Cancer
Ananda Lewis
What Oncologists Think of Ex-MTV VJ Ananda Lewis’s Decision to ‘Keep’ Her Breast Cancer Tumor
Mammogram back view
More Younger Women Are Being Diagnosed With Breast Cancer, Study Shows
Jill Martin
Today's Jill Martin Reflects on Breast Cancer Diagnosis—And Opens Up About the Genetic Test That Saved Her Life
black female patient hospital bed
Black Women Face Higher Breast Cancer Mortality Rates Across All Subtypes, Study Reveals
Elle Macpherson on red carpet
Elle Macpherson Says She Refused Chemotherapy for Breast Cancer—Here's What Oncologists Think
doctor performing ultrasound on person's chest in hospital room
What Happens if You Have an Inverted Nipple?
Woman getting a mammogram.
Your Mammogram Results Revealed You Have Dense Breasts—Now What?
Doctor explaining to a patient the result of her mammogram.
Study Reveals One Reason Why Many Women Don't Return for Mammogram Screenings
radiologist in a lab scanning a woman's breast and inserting a needle to complete a biopsy
What To Expect During a Stereotactic Breast Biopsy
Doctor talking to patient about male breast cancer
What To Know about Male Breast Cancer
Mammogram
New Mammogram Guidelines: Breast Cancer Screening Should Start at 40, Expert Panel Says
person with a high risk of breast cancer eating nutritious food to reduce risk
How To Prevent Breast Cancer
doctor looks at mammogram
Should You Pay Extra for AI to Read Your Mammogram? Breast Imaging Experts Weigh the Pros and Cons
doctor using imaging scan to diagnose metastatic breast cancer
How Is Metastatic Breast Cancer Diagnosed?
olivia munn at 96th annual Oscars
Olivia Munn Says Breast Cancer Risk Assessment Score ‘Saved’ Her Life—Here’s What to Know
young woman getting tested for inflammatory breast cancer
What To Know About Inflammatory Breast Cancer (IBC)
Close Up Of Iv Drip At Hospital
What Is Enhertu (Fam-Yrastuzumab Deruxtecan-Nxki)?
woman getting ultrasound before breast biopsy
What Is a Breast Biopsy?
doctor performing ultrasound for breast cancer rash
What Is a Breast Cancer Rash?
blood samples for BRCA testing
What to Know About BRCA Testing and What Your Results Mean
women sitting together in a breast cancer support group
Getting the Breast Cancer Support You or a Loved One Needs
Woman doing a self breast exam
How to Perform a Breast Self-Exam
Ricki Fairley sits on a bench with the words Breast Cancer What I Wish I Knew next to her
What I Wish I Knew About Breast Cancer’s Effect on Black Women
Card Placeholder Image
What I Wish I Knew About Breast Cancer
A headshot of Stephanie Bernik, MD, with the words "Breast Cancer What I Wish I Knew" next to it
What I Wish I Knew About the Emotions in Managing Early-Stage Breast Cancer
Mindy Miller stands with flowers in her hands with the words Breast Cancer What I Wish I Knew next to her
What I Wish I Knew About Breast Cancer Treatment and Its Side Effects
Woman with scarf on her head looking at her phone
Living With Breast Cancer During and After Treatment
Friendly Female Doctor Explains the Mammogram Procedure to a Topless Latin Female Patient with Curly Hair Undergoing Mammography Scan. Healthy Female Does Cancer Prevention Routine in Hospital Room
How Is Breast Cancer Diagnosed?
Doctor woman examining her patient breast for cancer
Finding a Lump in Your Breast—7 Possible Causes
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What To Know About Ductal Carcinoma In Situ (DCIS)—Stage 0 Breast Cancer
Young woman performing a breast exam
What Causes Itchy Nipples and Breasts?
Portrait of two friends sitting on the floor at home looking at gift
15 Gifts To Give Someone With Breast Cancer
Closeup of pregnant woman performing self breast exam
Why Do I Have a Burning Sensation in My Breast?
Female doctor listening to patient
What Causes Breast Pain?
Cancer patient stretching
Cardio, Strength Training May Be Beneficial For Stage IV Breast Cancer Patients, Study Finds
Doctor talking to patient
5 Lesser-Known Breast Cancer Symptoms—Because a Lump Isn't the Only Sign
Older woman talking to a doctor
Study: Breast Cancer Screening May Not Be as Helpful for Older Women
Woman getting a mammogram
Study: AI-Supported Mammogram Screening Helped Doctors Detect 20% More Breast Cancer Cases
Women receiving radiation therapy
Women Treated for Breast Cancer May Age Faster Than Cancer-Free Women
Doctor comforting patient
What Trans People Need to Know About Breast Cancer Risk and Screening
Woman getting a mammogram
How Changes in Breast Density Over Time May Influence Breast Cancer Risk
woman undergoing mammogram
Women Should Begin Regular Mammograms at 40, U.S. Health Panel Recommends
african american woman prepares for breast exam
Study: Black Women Should Begin Breast Cancer Screening Earlier Than Currently Recommended
young woman doing breast ultrasound
Follow-Up Breast Cancer Imaging Costs Deter People From Getting Care, Study Finds
healthcare provider talking to female patient
FDA's Updated Mammogram Regulations Aim to Protect People With Dense Breasts
female doctor talking to male patient
Breast Cancer Survival Rates Have Steadily Improved for Women—But Not for Men
healthcare provider reading mammogram results to patient.
Does Benign Breast Disease Increase the Risk of Breast Cancer?
Katie Couric is seated and speaking to her interviewer
How Do Dense Breasts Influence Breast Cancer Risk? Katie Couric's Diagnosis, Explained
Young mom with cancer holds her daughter tightly
More People Are Surviving Cancer Than Ever Before, New Report Shows
Young woman practicing yoga outdoors in park
How Moving More and Sitting Less May Help Lower Breast Cancer Risk
Person gives themselves a breast cancer exam.
The COVID-19 Vaccine Does Not Cause Breast Cancer But May Change Your Mammogram
Senior woman looking at her sagging breasts in the mirror
What To Know About Sagging Breasts (Breast Ptosis)
Young woman is having mammography examination at the hospital or private clinic with a professional female doctor.
8 Things To Know About Breast Cancer Screening With Implants
A woman does a breast exam while sitting on her couch.
Breast Cancer Misdiagnosed as a Cyst
person wearing pink shirt with breast cancer awareness ribbon on
Stage 4 Breast Cancer Survival Rates and Life Expectancy
Young African American woman palpating her breast by herself that she concern about breast cancer. Healthcare and breast cancer concept
What To Do if You Find a Lump in Your Breast
Woman with short black hair standing in a bra gives herself a breast exam in the mirror.
What Is Triple-Negative Breast Cancer?
Person in a towel examining body in the mirror.
5 Causes of Nipple Discharge
sunburn-breast-cancer-woman
What Is Inflammatory Breast Cancer?
person getting breast ultrasound done
What To Know About Breast Cysts
hair-loss-chemo
What Helps Hair Growth After Chemo?