Robin Roberts Fighting Blood Disorder

Gulf Coast native Robin Roberts announced she's fighting a rare blood disorder on "Good Morning America" Monday morning.

Roberts has myelodysplastic syndrome. 

In her case the syndrome is a rare reaction to the chemotherapy treatments that helped her beat breast cancer five years ago.

Roberts will need a bone marrow transplant.

Her sister and local television anchor Sally Ann Roberts is a perfect match.

She will be her donor.

Roberts says her doctor and faith tell her she's going to make a full recovery.