Dictionary of Cancer Terms
View in Spanish: Fase crónica
Chronic phase (KRAH-nik fayz)
Refers to the early stages of chronic myelogenous leukemia or chronic lymphocytic leukemia. The number of mature and immature abnormal white blood cells in the bone marrow and blood is higher than normal, but lower than in the accelerated or blast phase.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.