Valerie Harper has announced to People magazine that she was diagnosed with terminal brain cancer on January 15th. The 73-year-old TV and stage actress is best known for playing Rhoda Morgenstern during the 1970s on The Mary Tyler Moore Show and her own spinoff Rhoda. She also starred in the late 1980s sitcom Valerie and Valerie’s Family later retitled The Hogan Family after Harper was written out of the show due to a dispute with the producers Miller-Boyett. In more recent years she has been a busy and award-winning actress in theater productions on both coasts. She also was a Screen Actors Guild activist, running for SAG president in 2001 but losing to Melissa Gilbert. In the People issue appearing on newstands Friday, Harper said she is suffering from leptomeningeal carcinomatosis and may have just three months to live. Harper had been publicizing her new memoir I, Rhoda and dealing with her illness privately until now.