U.S. Tv reporter Amy Robach stunned viewers on Monday (11Nov13) by announcing she is set to undergo a double mastectomy after a live examination on Tv led to a breast cancer diagnosis.

The ABC News anchor made the announcement on Good Morning America, revealing she was told the devastating news after she underwent an on-camera mammogram for the show last month (Oct13).

Speaking to Good Morning America host Robin Roberts, who is a cancer survivor, Robach said, "If I got the mammogram on air and it saved one life, then it's all worth it. It never occurred to me that that life would be mine.

"It's absolutely surreal to be sitting here. But as scary as it all is, I'm so so lucky - because you guys pushed me to that mammogram - thank God you did, I wasn't in any rush to have that done any time soon."

The 40 year old will undergo the operation and reconstructive surgery on 14 November (13).