leukemia in which the involved cell is well differentiated, usually B-lymphocytes, but immunologically incompetent; types distinguished include chronic granulocytic, chronic lymphocytic, chronic myelomonocytic, eosinophilic and hairy cell leukemia.
(KRAHN-ik) A slowly progressing cancer of the blood-forming tissues.
A slowly progressing leukemia characterized by a clonal (malignant) proliferation of maturing and mature myeloid cells or mature lymphocytes. When the clonal cellular population is composed of myeloid cells, the process is called chronic myelogenous leukemia. When the clonal cellular population is composed of lymphocytes, it is classified as chronic lymphocytic leukemia, hairy cell leukemia, or T-cell large granular lymphocyte leukemia.
Also applicable to/known as
Chronic leukemia NOS
ICD-9-CM Volume 2 Index Entries That Refer To 208.1