"Good Morning America cohost Robin Roberts announced in 2012 that she was fighting a rare blood disorder, after beating breast cancer five years earlier:  ""Today, I want to let you know that I've been diagnosed with MDS or myelodysplastic syndrome. It's a disease of the blood and bone marrow and was once known as preleukemia. My doctors tell me I'm going to beat this — and I know it's true."""
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