Overview of myeloproliferative neoplasms (MPN)
MPNs can be split according to Philadelphia chromosome presence:
| Philadelphia chromosome-negative MPNs | Polycythaemia vera (PV) |
| Essential thrombocythaemia (ET) | |
| Primary myelofibrosis (PMF) | |
| Philadelphia chromosome-positive MPN | Chronic myeloid leukaemia |
The differences between MPN, myelodysplastic syndromes (MDS) and acute leukaemias can be grossly summarised as below; there is a degree of overlap between them:

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