World Health Organization classification of the chronic myeloproliferative diseases
| Myeloproliferative neoplasms (MPN) | 1 |
| Chronic myelogenous leukaemia, BCR-ABL1 positive | 1.1 |
| Polycythaemia vera | 1.2 |
| Essential thrombocythaemia | 1.3 |
| Primary myelofibrosis | 1.4 |
| Chronic neutrophilic leukaemia | 1.5 |
| Chronic eosinophilic leukaemia, not otherwise specified | 1.6 |
| Mast cell disease | 1.7 |
| Unclassifiable myeloproliferative neoplasms | 1.8 |
| Myeloid and lymphoid neoplasms with eosinophilia and abnormalities of PDGFRA, PDGFRB and FGFR1 | 2 |
| Myelodysplastic syndromes/myeloproliferative neoplasms | 3 |
| Chronic myelomonocytic leukaemia | 3.1 |
| Juvenile myelomonocytic leukaemia | 3.2 |
| Atypical chronic myeloid leukaemia, BCR-ABL-negative | 3.3 |
| Unclassifiable myelodysplastic syndromes/myeloproliferative neoplasms | 3.4 |
| Myelodysplastic syndromes | 4 |
| Acute myeloid leukaemia | 5 |
PDGFRA: platelet-derived growth factor receptor α; PDGFRB: platelet-derived growth factor receptor β; FGFR1: fibroblast growth factor receptor 1. Information from [5].