
WHO MDS CLASSIFICATION SUBTYPE
PROVISIONAL ENTITY: REFRACTORY CYTOPENIA OF CHILDHOOD (RCC)
NORMAL
ABNORMAL
Normal
Red Blood Cells

Abnormal
White Blood Cells

Normal
Platelets

Blasts

Provisional Entity: Refractory Cytopenia of Childhood (RCC)
Refractory Cytopenia of Childhood (RCC) is characterized by persistent cytopenia with less than 5%
blasts in bone marrow and less than 2% blasts in the bloodstream. This is the most common subtype of childhood MDS.