Joan Lunden revealed on ABC's Good Morning America Tuesday that she has been diagnosed with breast cancer. The TV journalist, 63, hosted the morning news program from 1980 to 1997. Lunden chatted about her medical news with current GMA host Robin Roberts, who is a breast cancer survivor.'I have covered many stories about breast cancer over the years but I never actually thought this would happen to me,' Lunden said via her social media sites.
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