If you’re an NBC "ER" fan, you may know her better as Dr. Abby Lockhart. Maura Tierney has played Lockhart for ten years and won an Emmy nomination for her performance, but now she’s involved in a battle much bigger than that for a golden statue — the battle for her health.  

Forty-four-year-old Tierney has revealed that she has found a tumor in her breast. "In an effort to guard my privacy, it seems that the wording of NBC’s press release has unfortunately caused some confusion and undue alarm about my health. I have discovered a tumor in my breast, which requires surgery," Tierney told Usmagazine.com in a statement. "I will not know either my exact diagnosis or course of treatment until that surgery is performed. My doctors have all assured me this is a very treatable condition," says Tierney.

The news comes after some weekend reports that the illness had pushed back the premiere of her new NBC fall drama, "Parenthood." Tierney’s sister told The Boston Herald that she’s expected to fully recover from the operation. "She’ll be fine," said Deirdre Puglini.

Tierney has appeared in films like "Liar Liar," playing Jim Carrey’s wife, and in last year’s Tina Fey comedy, "Baby Mama."

Breast cancer is the most common cancer among American women, except for skin cancers. About one in eight women run the risk of developing invasive breast cancer at some point in their lives. The American Cancer Society expects roughly 192,370 new cases of invasive breast cancer to be diagnosed among women in the United States this year alone.

In other celebrity news, 1980s teen star Molly Ringwald has given birth to twins, USMagazine confirms. Ringwald, who currently stars in "The Secret Life of the American Teenager," named the twin boy and girl Roman Stylianos and Adele Georgiana. Ringwald also has a five-year-old daughter with her husband, Panio Gianopoulos.

Congratulations to Ringwald and best of luck to Tierney as she undergoes her surgery!