Senator Claire McCaskill announced Monday that she is suffering from breast cancer.
McCaskill tweeted a link to her Tumblr account, where she explains that her prognosis is positive and she expects a full recovery.
The senator said she will have treatments in St. Louis for three weeks.
She said, “during this time my staff will continue to assist Missourians and I will be posting on my Senate website how I would have voted on any matters that come before the Senate in my absence, which I’ll also enter into the Congressional record”
McCaskill said she will submit written questions for any missed Senate hearings.