Myelodysplastic Syndromes: Comparison of the FAB and WHO Classifications
| FAB (1982) | WHO (1997) |
| AML = Acute Myeloid Leukemia; FAB = French-American-British classification scheme; MDS = Myelodysplastic Syndromes; WHO = World Health Organization. | |
| Myelodysplastic Syndromes | |
| Refractory anemia. | Refractory anemia. |
| Refractory cytopenia with multilineage dysplasia. | |
| Refractory anemia with ringed sideroblasts. | Refractory anemia with ringed sideroblasts. |
| Refractory anemia with excess blasts. | Refractory anemia with excess blasts. |
| Myelodysplastic syndrome, unclassifiable. | |
| Myelodysplastic syndrome associated with del(5q). | |
| Reclassified from MDS to: | |
| Refractory anemia with excess blasts in transformation. | Acute Myeloid Leukemia identified as AML with multilineage dysplasia following a myelodysplastic syndrome. |
| Chronic myelomonocytic leukemia. | Myelodysplastic and Myeloproliferative Diseases |
