The Emmy winner's cancer was detected through an MRI ordered by a doctor and is notlife-threatening, publicist Ame Van Iden said in a statement Saturday.
Applegate is scheduled to appear on a one-hour television special, Stand Up To Cancer, to be aired on ABC, CBS and NBC on Sept. 5 to raise funds for cancerresearch.
The 36-year-old actress has been nominated for an Emmy and a Golden Globe for the show Samantha Who?, in which she plays a woman who wakes from a coma with no memory of who sheis.
The show, which debuted last October, marked a return to series television for Applegate, whohelped establish the Fox network in 1987 as ditzy teenager Kelly Bundy on Married ... With Children. The raunchy comedy ran 11 seasons and has been airing insyndication since.
Applegate won an Emmy as outstanding guest actress in a comedy series in 2003 for her role asone of Jennifer Aniston's younger sisters in Friends. She was nominated for a Tony in 2005 for the Broadway musical Sweet Charity.
Soon after Married ... With Children, she starred in Jesse, playing a single mother raising a young son. The show lasted two seasons.
Her films include Don't Tell Mom the Babysitter's Dead, Wild Bill, Wonderland and Anchorman: The Legend of Ron Burgandy.
