WHO MDS CLASSIFICATION SUBTYPE

PROVISIONAL ENTITY: REFRACTORY CYTOPENIA OF CHILDHOOD (RCC)

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.

MDS WITH SINGLE LINEAGE DYSPLASIA

(MDS-SLD)

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MDS WITH MULTILINEAGE DYSPLASIA

(MDS-MLD)

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MDS WITH RING SIDEROBLASTS

(MDS-RS)

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MDS WITH EXCESS BLASTS

(MDS-EB)

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PROVISIONAL ENTITY

Refractory cytopenia of childhood (RCC)

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MDS WITH ISOLATED DEL(5Q)

DEL(5Q)

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MDS UNCLASSIFIABLE

(MDS-U)

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