Hematologic diseases mpn refers to the abbreviation of myeloproliferative neoplasm, which is a class of hematologic diseases, mainly malignant hematologic diseases that occur in the elderly, also commonly known as blood cancers, but most of these diseases develop slowly and can be controlled well without affecting life expectancy, while a small number of patients will transform into acute leukemia, leading to increased treatment difficulty and thus increased mortality. This group of diseases generally includes the following, such as chronic myeloid leukemia, true erythroblastosis, primary thrombocytosis, primary myelofibrosis, chronic neutrophilic leukemia, chronic eosinophilic leukemia, hypereosinophilic syndrome without additional classification, mastocytosis, mpn unclassified, which are the most common types of diseases mainly referring to pH chromosome-negative true erythroblast hyperplasia, primary thrombocythemia, and primary myelofibrosis.