Idiopathic thrombocytopenic purpura in children remits spontaneously in the majority of cases but most children require treatment. Between 1995 and 2005, 265 children (0-15 years old) have been consecutively observed and treated: 28 children with high doses of methylprednisolone (HDMP) (15 mg/kgx4 days), 63 with HDMP (7.5 mg/kgx4 days), 37 with HD dexamethasone (DXM) pulses, 29 with low doses of MP, and 51 with different doses of intravenous immunoglobulins (IVIG) (0.4 or 0.8 g/kg). Fifty-seven children have not been treated because of a platelet count>or=10x10(9)/L and no significant bleeding. Two hundred forty-four (92.1%) children reached a persistent CR, 237 (89.4%) after a first-line treatment or the wait and see strategy. No statistically significant differences in CR related to different treatments have been observed. IVIG and HDMP (7.5 mg/kg for 4 days) are the best treatments to reach quickly safe platelet levels>or=30x10(9)/L (3-6 days) and CR (7-11 days). Among non-responding (NR) patients, seven have been splenectomized and three reached stable CR. These results emphasize differences with adult ITP.
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