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This Senator Won’t Let a Breast Cancer Diagnosis Stop Her From Doing Her Job

Senator Claire McCaskill from Missouri announced in February 2016 that she had been diagnosed with breast cancer. She expects to recover fully and is only taking three weeks off her Senate duties for treatment. She hopes to return to work as soon as possible. McCaskill vowed to stay in touch with the people of Missouri through her staff and through her website. She promised to post on her website how she would have voted on any bills coming through the Senate while she is in St. Louis for treatment. She also intends to stay on top of things in her Senate committees. Her plan is to submit written questions for any hearings she misses. Her staff in Washington, D.C. and in Missouri continue to assist any of her constituents with their questions and issues.

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McCaskill made the public announcement on her Tumblr page. She told her constituents that she was diagnosed after a regular mammogram, but she didn't give any information about the stage of her cancer.

Other senators responded immediately to McCaskill's announcement with public best wishes. McCaskill received encouraging and supportive tweets from Senators Elizabeth Warren, Barbara Mikulski, Tammy Baldwin and many others. Hillary Clinton tweeted McCaskill saying that cancer had picked the wrong person to mess with. Several news anchors, including Katie Couric and Rachel Maddow, also sent best wishes for healing.

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McCaskill has been in the U.S. Senate since 2007. She is the ranking Democratic Senator on the Special Committee on Aging. She also sits on several regular committees, including for Armed Services, Homeland Security, and Commerce, Science and Transportation.


Senator McCaskill was diagnosed during a routine mammogram. Mammograms are one of the key tools that doctors use to catch breast cancer at early stages. Learn more about what happens during a mammogram and how it's used in diagnosis.


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The Breast Cancer Site is a place where supporters and survivors come together to help fight breast cancer. In addition to sharing personal stories of hope, shopping for the cause, and signing petitions, visitors can take just a moment each day to click on a pink button to provide free mammograms for women in need. Visit The Breast Cancer Site and click today - it's free!