The PDQ cancer information summaries are reviewed regularly and updated as new information becomes available. This section describes the latest changes made to this summary as of the date above.Changes were made to this summary to match those made to the health professional version.
This information is produced and provided by the National Cancer Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National Cancer Institute via the Internet web site at http://cancer.gov or call 1-800-4-CANCER.Breast Cancer Treatment and Pregnancy
BackgroundBreast cancer incidence and mortalityBreast cancer is the most common noncutaneous cancer in U.S. women, with an estimated 64,640 cases of in situ disease, 232,340 new cases of invasive disease, and 39,620 deaths expected in 2013. Thus, fewer than 1 of 6 women diagnosed with breast cancer die of the disease. By comparison, about 72,220 American women are estimated to die of lung cancer in 2013. Males account for 1% of breast cancer cases and breast cancer deaths (refer to the Special Populations section of this summary for more information).Widespread adoption of screening increases breast cancer incidence in a given population and changes the characteristics of cancers detected, with increased incidence of lower-risk cancers, premalignant lesions, and ductal carcinoma in situ (DCIS). (Refer to the Ductal Carcinoma In Situ section in the Breast Cancer Diagnosis and Pathology section of this summary for more information.) Ecologic studies from the United States  and
Purpose of This SummaryThis PDQ cancer information summary for health professionals provides comprehensive, peer-reviewed, evidence-based information about breast cancer screening. It is intended as a resource to inform and assist clinicians who care for cancer patients. It does not provide formal guidelines or recommendations for making health care decisions.Reviewers and UpdatesThis summary is reviewed regularly and updated as necessary by the PDQ Screening and Prevention Editorial Board, which is editorially independent of the National Cancer Institute (NCI). The summary reflects an independent review of the literature and does not represent a policy statement of NCI or the National Institutes of Health (NIH). Board members review recently published articles each month to determine whether an article should:be discussed at a meeting,be cited with text, orreplace or update an existing article that is already cited.Changes to the summaries are made through a consensus process in
Call 1-800-4-CANCERFor more information, U.S. residents may call the National Cancer Institute's (NCI's) Cancer Information Service toll-free at 1-800-4-CANCER (1-800-422-6237) Monday through Friday from 8:00 a.m. to 8:00 p.m., Eastern Time. A trained Cancer Information Specialist is available to answer your questions.Chat online The NCI's LiveHelp® online chat service provides Internet users with the ability to chat online with an Information Specialist. The service is available from 8:00 a.m. to 11:00 p.m. Eastern time, Monday through Friday. Information Specialists can help Internet users find information on NCI Web sites and answer questions about cancer. Write to usFor more information from the NCI, please write to this address:NCI Public Inquiries Office9609 Medical Center Dr. Room 2E532 MSC 9760Bethesda, MD 20892-9760Search the NCI Web siteThe NCI Web site provides online access to information on cancer, clinical trials, and other Web sites and organizations that offer support
Early Stage Breast Cancer (Stage I and Stage II)Treatment of early stage breast cancer (stage I and stage II) may be surgery followed by adjuvant therapy as follows: Modified radical mastectomy.Breast-conserving surgery: Lumpectomy, partial mastectomy or segmental mastectomy.Breast-conserving surgery during pregnancy followed by radiation therapy after the baby is born.Surgery during pregnancy followed by chemotherapy after the first 3 months of pregnancy.Clinical trials of surgery followed by hormone therapy with or without chemotherapy.Late Stage Breast Cancer (Stage III and Stage IV)Treatment of late stage breast cancer (stage III and stage IV) may include the following:Radiation therapy.Chemotherapy.Radiation therapy and chemotherapy should not be given during the first 3 months of pregnancy.