Susan G Komen  
I've Been Diagnosed With Breast Cancer Someone I Know Was Diagnosed Share Your Story Join Us And Stay Informed Donate To End Breast Cancer
Home > Understanding Breast Cancer > Diagnosis




Breast cancer is often first suspected when a lump or change in the breast is found or when an abnormal area is seen on a mammogram. Most of the time, these findings do not turn out to be cancer. However, the only way to know for sure is through follow-up tests. This section of Understanding Breast Cancer describes these follow-up tests and discusses how they help to determine your diagnosis and guide your treatment.

Our interactive treatment navigation tool for newly diagnosed patients can help you explore the different types of treatments you may have. 

Types of Biopsies 

Pathology Reports 


Factors that Affect Treatment and Prognosis 

How is Breast Cancer Staged? 


Types of Tumors 

Clinical Trials 


Other Issues Related to Diagnosis 

Research Tables 



Biopsies  010674.gif