Chronic leukemia

Chronic leukemia is an increase of abnormal white blood cells. It differs from acute leukemia, and is categorized as myelogenous, lymphocytic or myeloproliferative.

Chronic leukemia may refer to:
 * Chronic myelogenous leukemia
 * Chronic lymphocytic leukemia, including Hairy cell leukemia
 * Myeloproliferative neoplasms including polycythemia vera, essential thrombocythemia, primary myelofibrosis, chronic neutrophilic leukemia, and chronic eosinophilic leukemia.