| Source | Code | Name | Case count | Share of cases (%) |
|---|---|---|---|---|
| CANC | CANC_TOPO(C421)_MORPHO(9989)_BEH(3) | Bone marrow, Myelodysplastic syndrome, NOS | 299 | |
| DEATH | DEATH_ICD10(D469) | Myelodysplastic syndrome, unspecified | 141 | |
| DEATH | DEATH_ICD10(D467) | Other myelodysplastic syndromes | 101 | |
| CANC | CANC_TOPO(C421)_MORPHO(9983)_BEH(3) | Bone marrow, Refractory anemia with excess blasts | 57 | |
| CANC | CANC_TOPO(C421)_MORPHO(9982)_BEH(3) | Bone marrow, Refractory anemia with sideroblasts | 40 | |
| DEATH | DEATH_ICD10(D462) | Refractory anaemia with excess of blasts | 36 | |
| CANC | CANC_TOPO(C421)_MORPHO(9980)_BEH(3) | Bone marrow, Refractory anemia | 23 | |
| CANC | CANC_TOPO(C421)_MORPHO(9985)_BEH(3) | Bone marrow, Refractory cytopenia with multilineage dysplasia | 20 | |
| DEATH | DEATH_ICD10(D461) | Refractory anaemia with sideroblasts | 20 | |
| DEATH | DEATH_ICD10(D460) | Refractory anaemia without sideroblasts, so stated | 15 | |
| CANC | CANC_TOPO(C421)_MORPHO(9986)_BEH(3) | Bone marrow, Myelodysplastic syndrome with 5q deletion (5q-) syndrome | 6 |