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  • Title: [Clinical characteristics and treatment results of acute promyelocytic leukemia in children (Children's Cancer and Leukemia Study Group)].
    Author: Shimizu H, Nakadate H, Taga T, Utsumi J, Nishikawa K, Gushiken T, Horikoshi Y, Oka T, Kikuta A, Maeda H.
    Journal: Rinsho Ketsueki; 1993 Sep; 34(9):989-96. PubMed ID: 8230751.
    Abstract:
    The clinical characteristics and treatment outcome in 40 children with acute promyelocytic leukemia (APL) treated at institutions participating in the Children's Cancer and Leukemia Study Group (CCLSG) were studied retrospectively. The median age at diagnosis was 8 years old. Bleeding diathesis was the predominant presenting symptom (90%), associated with laboratory findings of disseminated intravascular coagulation. Hepatomegaly, splenomegaly and lymphadenopathy were observed in 35%, 10%, and 15% of the cases, respectively. The median WBC count was 4.25 x 10(9)/l. Anemia (hemoglobin < 8 g/dl) and thrombocytopenia (< 30 x 10(9)/l) were present in more than half of the patients. Cytogenetic studies demonstrated the characteristic 15; 17 translocation in about 90% of the patients analyzed. Induction therapy consisted of cytosine arabinoside and an anthracycline, with or without other agents. Twenty-nine patients (73%) achieved complete remission (CR) while early fatal hemorrhage was the predominant cause of induction failure. The survival rates continued to decrease (28% at 3 years, 24% at 5 years, and 7.9% at 10 years) due to late marrow relapses. Anthracycline cardiotoxicity was fatal in three patients in remission. These clinical features of childhood APL should be taken into account in the development of new protocols.
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