Christina Applegate is battling breast cancer.

E!:
Here's to a speedy recovery.
Christina Applegate has been diagnosed with an early form of breast cancer, according to a statement released Saturday by the actress' rep.
"Benefitting from early detection through a doctor-ordered MRI, the cancer is not life threatening," publicist Ame Van Iden said. "Christina is following the recommended treatment of her doctors and will have a full recovery.
"No further statement will be issued at this time."
Applegate's rep also tells E! News that the 36-year-old Emmy nominee will maintain her regular shooting schedule on Samantha Who? while undergoing treatment.