Skip to content

Breast Cancer Health Center

Font Size

Breast Cancer Treatment and Pregnancy (PDQ®): Treatment - Health Professional Information [NCI] - Stage Information for Breast Cancer Treatment and Pregnancy

Procedures used for determining the stage of breast cancer should be modified for pregnant women to avoid radiation exposure to the fetus. Nuclear scans cause fetal radiation exposure.[1] If such scans are essential for evaluation, hydration and Foley catheter drainage of the bladder can be used to prevent retention of radioactivity. Timing of the exposure to radiation relative to the gestational age of the fetus may be more critical than the actual dose of radiation delivered.[2] Radiation exposure during the first trimester (>0.1 Gy) may lead to congenital malformations, mental retardation, and increased relative risk of carcinogenesis. Doses greater than 1 Gy may produce congenital abnormalities. Doses of 0.1 Gy may result in fewer defects.

Chest x-rays with abdominal shielding are considered safe, but as with all radiologic procedures, they should be used only when essential for making treatment decisions.[1,3] A chest x-ray delivers 0.00008 Gy.[4]

Recommended Related to Breast Cancer

Me and the Girls: Erica Seymore

WebMD senior writer Miranda Hitti interviewed breast cancer survivors as part of a series for Breast Cancer Awareness Month. The series, called “Me & the Girls,” explores the personal stories of these women after they were diagnosed with breast cancer. Breast cancer survivor Erica Seymore, 34, lives in the Miami area. She never felt any lumps in her breast. But she noticed a red, itchy mark on her left breast, and also felt some pain that would come and go in that breast. "It would...

Read the Me and the Girls: Erica Seymore article > >

For the diagnosis of bone metastases, a bone scan is preferable to a skeletal series because the bone scan delivers a smaller amount of radiation and is more sensitive. A bone scan delivers 0.001 Gy. Evaluation of the liver can be performed with ultrasound, and brain metastases can be diagnosed with a magnetic resonance imaging (MRI) scan. Data on MRI during pregnancy are not yet available, but gadolinium crosses the placenta and is associated with fetal abnormalities in rats.[5]

References:

  1. Gwyn K, Theriault R: Breast cancer during pregnancy. Oncology (Huntingt) 15 (1): 39-46; discussion 46, 49-51, 2001.
  2. Barnavon Y, Wallack MK: Management of the pregnant patient with carcinoma of the breast. Surg Gynecol Obstet 171 (4): 347-52, 1990.
  3. Nicklas AH, Baker ME: Imaging strategies in the pregnant cancer patient. Semin Oncol 27 (6): 623-32, 2000.
  4. Gallenberg MM, Loprinzi CL: Breast cancer and pregnancy. Semin Oncol 16 (5): 369-76, 1989.
  5. Yang WT, Dryden MJ, Gwyn K, et al.: Imaging of breast cancer diagnosed and treated with chemotherapy during pregnancy. Radiology 239 (1): 52-60, 2006.

    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.

    WebMD Public Information from the National Cancer Institute

    Last Updated: May 28, 2015
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
    1
    Next Article:

    Today on WebMD

    Breast Cancer Overview
    From self-exams and biopsies to reconstruction, we’ve got you covered.
    Dealing with breast cancer
    Get answers to your questions.
     
    woman having mammogram
    Experts don’t agree on all fronts, but you can be your own advocate.
    woman undergoing breast cancer test
    Many women worry. But the truth? Most abnormalities aren’t breast cancer.
     
    Breast Cancer Treatments Improving
    VIDEO
    Resolved To Quit Smoking
    SLIDESHOW
     
    Woman getting mammogram
    Article
    Screening Tests for Women
    SLIDESHOW
     
    ovarian cancer overview slideshow
    SLIDESHOW
    serious woman
    Article
     
    what is your cancer risk
    HEALTH CHECK
    10 Ways to Revitalize Slideshow
    SLIDESHOW