Cancer types

Breast cancer

Breast cancer

Stage and hormone-receptor/HER2 results help guide care.

Sources checked · Introductory guide

On this page

Understanding the cancer

Cancer arising in breast tissue; treatment differs by subtype.[1]

Before choosing treatment

Review ER, PR and HER2 results and the cancer stage.[2]

How treatment is planned

Care may combine surgery, radiation and medicines, sometimes before surgery.[1]

Questions for your care team

  • What is the purpose of this medicine for my subtype?

Sources and scope

Source documents are in English.

  1. NCI · Breast Cancer Treatment (opens in a new tab)
  2. NCI · Breast Cancer Biomarkers (opens in a new tab)

General information based on official public sources. This is not a complete list of uses or side effects. Individual treatment decisions require your care team and current source documents. US-source uses do not establish local approval or reimbursement.

Related entries

Breast cancer | Cancer Encyclopedia | My Chemo Diary