Olivia Munn had a clear mammogram and no symptoms of breast cancer. A 2-minute online test led to her diagnosis at 43.

Olivia Munn had a clear mammogram and no symptoms of breast cancer. A 2-minute online test led to her diagnosis at 43.

Olivia Munn said a quick online test led to her stage 1 breast cancer diagnosis.Dave Benett/Getty ImagesOlivia Munn, 45, showed no signs of breast cancer, including in her mammograms.A quick lifetime risk assessment led to her getting diagnosed with stage 1 breast cancer at 43.Munn's mother also took the assessment and was diagnosed with a more aggressive cancer.Olivia Munn did everything she knew to be proactive about breast cancer screening. H…