Chronic granulocytic leukemia is an uncommon myeloproliferative disorder that results in substantial proliferation of mature granulocytes.
Because the severe leukocytosis and left shift observed with chronic granulocytic leukemia may strongly resemble a leukemoid reaction, other causes of severe leukocytosis must be ruled out.
Myeloid cellular infiltrations may cause hepatomegaly, splenomegaly, or nonregenerative anemia and thrombocytopenia.
Commonly, results of serum biochemical analyses are only minimally altered or within reference ranges and clinical signs are nonspecific.