<unk> s are classified as blood cancers by most institutions and organizations. In<unk> s, the<unk>  (abnormal growth) starts out as benign and can later become malignant. As of 2016, the World Health Organization lists the following subcategories of<unk> s: * Chronic myeloid leukemia (CML) * Chronic neutrophilic leukemia (CNL) * Polycythemia vera (PV) * Primary myelofibrosis (PMF) * PMF, Prefibrotic Stage * PMF, Overt Fibrotic Stage * Essential thrombocythemia (ET) * Chronic eosinophilic leukemia (not otherwise specified) *<unk> , unclassifiable <unk> -U)
Myeloproliferative neoplasm
Lymphoproliferative disorders
Immunoproliferative disorder
Autoimmune neutropenia
Leukemoid reaction
Myelodysplastic syndrome
B-cell leukemia
B-cell lymphoma