Understanding Breast Cancer Guide

Breast cancer is one of the most commonly diagnosed cancers in the world. This is a comprehensive guide that will help you understand breast cancer, how it is diagnosed and treated, and the latest research advances. It also provides advice and resources about coping with breast cancer for you and your loved ones.

This guide was developed by the HealthTree Education Team and was last updated and reviewed on May 18, 2026. 

Navigating the Understanding Breast Cancer Guide: This guide is meant to help you understand breast cancer, how it forms, how it is treated, and how to cope with a breast cancer diagnosis. It is meant for people with breast cancer and their loved ones. 

You can choose to read every article in this guide in order or only read the sections that are most important to you. Use this menu to skip around through the guide or use the links at the end of each page to move on to the next section. 

What is Breast Cancer?

Learn what breast cancer is and how it starts. It also includes the signs and symptoms of breast cancer and the risk factors. 

Signs and Symptoms of Breast Cancer

Learn about the signs and symptoms that people diagnosed with breast cancer may experience. 

Risk Factors for Breast Cancer

Some people may be at a higher risk of developing breast cancer. Learn more about the risk factors for this cancer. 

Statistics for Breast Cancer

Learn more about how many people are diagnosed with breast cancer every year and breast cancer survival statistics.

How is Breast Cancer Diagnosed?

Learn more about the tests and procedures that are used to diagnose breast cancer.

How is Breast Cancer Staged and Classified?

There are different systems for staging breast cancer and determining prognosis. This page will help you understand what your breast cancer stage means. 

How is Breast Cancer Treated?

Breast cancer is treated using different combinations of therapies. Learn more about surgery, chemotherapy, and immunotherapy, plus supportive care to help manage your symptoms. 

Joining A Clinical Trial for Breast Cancer

Clinical trials can be a way for people with breast cancer to receive the latest treatment options. Learn more about why you may want to join a clinical trial, how to find a clinical trial using the HealthTree Clinical Trial Finder, and what clinical trial results mean. 

Coping with Breast Cancer

A breast cancer diagnosis can be overwhelming and difficult. Find ways to cope with the support of your family, friends, caregivers, and care team.

Questions to Ask About Breast Cancer

When you go to appointments with your care team, you may not know what to ask. Use this list of questions to help brainstorm what information is most important to you.