Emotional and teary-eyed, Robin was joined on the couch with her co-hosts. On the sideline (pictured on left) Diane Sawyer and Roberts older sister Sally Ann Roberts (anchor for New Orleans WWL-TV) stood by as she announced on that she has been diagnosed with a rare blood and bone-marrow disorder called Myelodysplastic Syndrome (MDS), and will undergo a bone marrow transplant.
"Sometimes treatment for cancer can lead to other serious medical issues and that's what I'm facing right now," she said. "The reason I am sharing this with everybody right now is because later today I begin what's known as pre-treatment."
See the video for more of this startling revelation.