Acute Infectious Lymphocytosis in Childhood

Infectious lymphocytosis is characterized by mild complaints, vomiting, diarrhea, upper respiratory tract infection, abdominal pain, slight or absent fever, symptom of short duration. There is no enlargement of liver, spleen or lymph nodes white blood cell counts varying from 40.000 to 100.000/mm3, lymphocyte rate is % 70. There is no anemia or thrombocytopenia. This disease to be differentiated from acut leukemia, infectious mononucleosis and lymphocytosis accompanying certain infections, particularly pertusis. Prognosis is excellent and no treatment required. We aimed to emphisize with these cases that when lymphocytosis is found the differential diagnosis must include acut infectious lymphocytosis

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