Haematological cancers.

Essential facts Haematological malignancies are a diverse group of cancers that affect the blood, bone marrow and lymphatic systems. The main categories are lymphoma, leukaemia, myeloma, myelodysplastic syndromes and myeloproliferative neoplasms. In addition, there are subtypes of lymphoma and leukaemia, as well as more rare haematological cancers that have their own categories. There are also borderline conditions such as aplastic anaemia and other non-malignant bone marrow failure syndromes. The charity Bloodwise says 38,000 people in Britain are diagnosed every year with blood cancer or a related disorder, making it the country's fifth most common cancer.