Clinical Features and Treatment Outcome of Childhood Leukemia / 日本農村医学会雑誌

  We reviewed the clinical features and treatment outcome of 110 children with leukemia. Treatment was performed between 1980 and 2009 at our hospital. The mean age at onest was 5 years 6 months, the ratio of males to females was 1:0.72, and mean leukocyte count was 4.91×10⁴/μl. Subtypes of leukemia were acute lymphoblastic leukemia (ALL) in 79.1% of the patients, acute myeloid leukemia (AML) in 17.2%, and chronic leukemia in 3.6%. In all patients, the overall 30-year survival rate estimated by the Kaplan-Meier method was 67.4%. In the three decades from the 1980s, the overall 10-year survival rate has been improved significantly from 46.4% in the 1980s, 69.2% in the 1990s to 87.2% in the 2000s (P<0.01). The overall 10-year survival rate was 70.7% in all children with ALL, and 70.6% in all children with AML. But in the last decade, the 10-year survival rate was improved to 87.0% in children with ALL and 87.3% in children with AML. Twenty-four patients received hematopoietic stem-cell transplantation, and the 10-year survival rate was 58.6% after transplant. Second malignancies were detected in three patients, and six patients have long-term sequelae. In conclusionn, the treatment result of childhood leukemia has improved considerably, so that more intensive treatment for patients with poor prognosis and less toxic treatment for patients with good prognosis will be necessary in future.

Clinical Featues and Role of Helicobacter pylori Infection in Children with Idiopathic Thrombocytopenic Purpura / 日本農村医学会雑誌

  We demonstrated the clinical features and outcome of 87 children with idiopathic thrombocytopenic purpure (ITP). Most of them were younger children with severe thrombocytopenia; 71.3% were under 5 years old and 49.4% had platelet counts below 1×10⁴/μl. Initial treatment consisted of high-dose intravenous immunoglobulin in 60 (69.0%), steroid in 10 (11.5%), and no therapy in 17 (19.5%). More than 90% of the children with platelet counts below 2×10⁴/μl received treatment, but most children with platelet counts above 2×10⁴/μl were observed without treatment. No patients had complications with CNS hemorrhage. Chronic ITP was noted in 17 patients (19.5%). Their mean age was 6 years 3 months compared with 2 years 8 months for the acute patients (p<0.01). But there were no significant differences in sex, platelet count, and initial treatment between chronic ITP and acute ITP. Six (35.3%) out of 17 children with chronic ITP subsequently achieved a spontaneous recovery. As of today, only 3 patients (3% of all patients, and 17.6% of patients with chronic ITP) have platelet counts below 5×10⁴/μl. The overall prognosis and quality of life were excollent. <i>Helicobacter Pylori</i> (<i>H. pylori</i>) infection was found in 7.1% of the chronic patients and 5.3% of the acute patients, but platelet counts of them returned to normal without <i>H. pylori</i> eradication thrapy. It seemed that <i>H. pylodi</i> infection played a minor role in pediatric ITP.

Clinical Featues and Role of \it{Helicobacter pylori} Infection in Children with Idiopathic Thrombocytopenic Purpura / 日本農村医学会雑誌

We demonstrated the clinical features and outcome of 87 children with idiopathic thrombocytopenic purpure (ITP). Most of them were younger children with severe thrombocytopenia; 71.3% were under 5 years old and 49.4% had platelet counts below 1×104/μl. Initial treatment consisted of high-dose intravenous immunoglobulin in 60 (69.0%), steroid in 10 (11.5%), and no therapy in 17 (19.5%). More than 90% of the children with platelet counts below 2×104/μl received treatment, but most children with platelet counts above 2×104/μl were observed without treatment. No patients had complications with CNS hemorrhage. Chronic ITP was noted in 17 patients (19.5%). Their mean age was 6 years 3 months compared with 2 years 8 months for the acute patients (p<0.01). But there were no significant differences in sex, platelet count, and initial treatment between chronic ITP and acute ITP. Six (35.3%) out of 17 children with chronic ITP subsequently achieved a spontaneous recovery. As of today, only 3 patients (3% of all patients, and 17.6% of patients with chronic ITP) have platelet counts below 5×104/μl. The overall prognosis and quality of life were excollent. Helicobacter Pylori (H. pylori) infection was found in 7.1% of the chronic patients and 5.3% of the acute patients, but platelet counts of them returned to normal without H. pylori eradication thrapy. It seemed that H. pylodi infection played a minor role in pediatric ITP.