ER star undergoes surgery for breast tumor

Actress Maura Tierney, who starred as Abby Lockhart, in medical drama, ER

Actress Maura Tierney, best known for her role in medical drama, ER, will undergo surgery for a breast tumor

A real life medical drama has hit actress Maura Tierney, best know for her long-running role as Abby Lockhart,  in TV medical drama ER.

Tierney, who is of Irish descent,  says she’s having surgery to remove a tumor in her breast. I will not know either my exact diagnosis or course of treatment until that surgery is performed,” the actress, 44, said in a statement.

The actress, has long been a supporter of breast-cancer awareness from way back. In 2005, she joined her fellow ER doctors in Ford Motor Co.’s “Tied to the Cause” ad campaign.