Leukemoid reaction in a patient with acute lymphoblastic leukemia following the second chemotherapy

摘要

The occurrence of persistent neutrophilic leukocy-tosis above 50,000 cells/μL for reasons other than leukemia is defined as leukemoid reaction. Chronic myelogenous leukemia (CML) and chronic neutro-philic leukemia (CNL) should be excluded, and un-derlying diseases or causes should be examined, in differential diagnosis. The most commonly ob-served causes of leukemoid reactions are severe infections, intoxications, malignancies, severe hem-orrhage, or acute hemolysis [1]. J Clin Exp Invest 2013; 4 (2): 258-259.