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This Oct. 1, 2013 photo released by ABC shows ABC News correspondent Amy Robach preparing to undergo a mammogram in New York. A month after undergoing the mammogram on "Good Morning America," ABC's Amy Robach said Monday, Nov. 11, she has breast cancer and will have a double mastectomy and reconstructive surgery this week.

(Ida Mae Astute | ABC via the Associated Press)

ABC correspondent Amy Robach announced that she has breast cancer Monday on Good Morning America.

Robach underwent an on-air mammogram for breast cancer awareness month on October 1. In a post on ABC's blog she wrote that she will be having a bilateral mastectomy and reconstructive surgery on Thursday.

Robach was initially apprehensive about having an on-air mammogram, but her producers, including Robin Roberts convinced her that doing it live could help save lives. She writes:

Robach was selected for the on-air exam because she was 40, the age at which it's recommended women get regularly checked for breast cancer, according to The Washington Post. She admits to having put off the exam for some time.

Entertainment Weekly shared a video of her announcement. In it she recalls the words Roberts said to convince her to do the initial exam:

Today shared tweets from some of Robach's former colleagues at NBC, congratulating her on her bravery and wishing her good luck on Thursday:

Huffington Post reports Robach thanked Roberts during Good Morning America on Monday saying, "You saved my life."

"YOU saved your life, Amy," Roberts replied.

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