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임영탁 대한소아청소년과학회 2005 Clinical and Experimental Pediatrics (CEP) Vol.48 No.2
Anemia can be defined as a reduction in blood hemoglobin concentration or red cell mass relative to age matched normal values. Clinical presentation may range from obviously pale and lethargy to an incidental finding during screening of an otherwise well appearing child. The differential diagnosis of anemia in each instance is broad with numerous possible etiologies. A careful history and physical examination as well as complete blood count, peripheral blood smear and additional laboratory tests are necessary in defining underlying cause of the anemia and guide in further treatment plans. In addition, Iron deficiency anemia and anemia of inflammation are common causes of mild to moderate anemia in children, but most pediatricians have some confusions to differentiate these two entities.
임영탁 부산대학교 병원 암연구소 2008 부산대병원학술지 Vol.- No.24
Purpose : Reactive thrombocytosis is observed in many disorder in children such as infection, malignancy, kawasaki disease, acute blood loss and post-splenectomy state. Iron deficiency anemia (IDA) is also a cause of reactive thrombocytosis in children, but the mechanisms are still unknown. I searched the incidence and progress of thrombocytosis in patients with IDA in children. Subject and Methods : Total 80 patients were diagnosed and treated with IDA in Department of Pediatrics, Pusan National University Hospital from January 2000 to December 2005. Thrombocytosis was defined as a platelet count >450x10^(9)/ L. The patients who had diseases causing reactive thrombocytosis except IDA were excluded in this study. A retrospective analysis of case records was undertaken for children with IDA. Results : 1) Thirty children (37.5%) had thrombocytosis and 50 children (62.5%) had a normal platelet count but there is no children who had thrombocytopenia. 2) The mean age of patients who had thrombocytosis was significantly younger than patients without thrombocytopenia (3.44 yr vs 7.43 yr). 3) Most patients (56.7%) who had thrombocytosis showed only moderate elevation of platelets, but there are 3 patients (10.0%) whose platelet counts >700x10^(9)/ L. 4) The incidence of thrombocytosis does not changed whether the patients had gastrointestinal occult bleeding or not. 5) Platelet count was progressively decreased with iron treatment and was nearly normalized after 1 month of treatment. 6) There are no complications of thrombocytosis. Conclusions : IDA is one of the most frequent causes of reactive thrombocytosis in children. Reactive thrombocytosis induced by IDA have usually a benign course and need no specific treatment except iron.