A Clinical Study of Pediatric Myelodysplastic Syndrome: Application of International Prognostic Scoring System and the Review of the Korean Literature / 대한암학회지

PURPOSE: Myelodysplastic syndrome (MDS) in children needs to be elucidated in terms of clinical characteristics, natural history, the most effective treatment and prognostic factors, as the disease is very rare and its definition and classification has not reached a consensus by many physician. This study was aimed to describe the characteristics and the disease courses of Korean children with MDS, and to analyze the usefulness of prognostic scoring systems in the prediction of transformation to acute myelogenous leukemia (AML) and overall survival among subgroups. MATERIALS AND METHODS: Fourteen children with MDS seen at Chonnam University Hospital and additional 59 patients identified by the review of Korean literature were evaluated to define clinical characteristics and disease courses. Kaplan-Meier (K-M) probability of leukemic transformation and overall survival were plotted. FAB subtypes, subgroups by Boumemouth Scoring System (BSS), and International Prognostic Scoring System (IPSS) risk groups were compared to predict transformation to AML and overall survival. RESULTS: The median age of 14 patients was 36.5 months. The sex ratio was 3.7:1 (M: F). The frequency of FAB subtypes in Korea was similar to that of other countries except for higher proportion of RA (37%). K-M 3-yr probability of AML transformation and survival for Korean patients were 54.7%, and 49.8%, respectively. Although FAB system, BMS and IPSS were all capable of discriminating subgroups in the prediction of AML transformation and survival, they did not reach the significant level possibly due to small number of patients assigned to each subgroup. CONCLUSION: The clinical characteristics of Korean children with MDS were not different from those of other countries. This study showed the high rate of AML transformation and poor survival in children with MDS.

A Case of Kabuki Make-Up Syndrome

Kabuki make-up syndrome (KMS) was firstly reported in 1981 by Niikawa, et al. and Kuroki et al. in a total of ten unrelated Japanese children with characteristic array of multiple congenital anomalies and mental retardation. The name reflects the resemblance between the facial features of patients and the actors of Kabuki, one of the most famous traditional performing arts in Japan. The syndrome is characterized by mental and developmental retardations and peculiar facial features including long palpebral fissures with eversion of the lateral portion of lower eyelid and arching of eyebrows. In addition, dermatoglyphic and skeletal abnormalities are commonly associated. In Japan, the syndrome appears to have an incidence of about 1 : 32,000 newborns. Outside of Japan, a growing number of patients have been recognized. However, this syndrome has been reported only a few cases in Korea. We report a boy diagnosed by clinical features with a brief review of the literature.

Therapeutic Efficacy of Prednisolone Withdrawal Followed by Recombinant alpha Interferon in Children with Chronic Hepatitis B / 대한소아소화기영양학회지

PURPOSE: To evaluate the efficacy of interferon alpha therapy with or without prednisolone in children with chronic hepatitis B. METHODS: Twenty-eight children (22 boys, 6 girls, mean age 130 months) had seropositive results for HBsAg, HBeAg and HBV DNA; 11 had chronic persistent hepatitis and 17 had chronic active hepatitis. The patients were divided into two groups depending upon their inflammatory activity on liver biopsy, pretreatment serum ALT levels and HBV DNA levels. Fourteen children (group 1: chronic active hepatitis, ALT > or = 100 IU/L and HBV DNA 100 pg/300 microliter) received prednisolone in decreasing daily doses of 60 mg/m2, 40 mg/m2, and 20 mg/m2, each for 2 weeks, followed after 2 weeks by interferon alpha 2a on the same schedule. At the end of therapy, 3 end points were analyzed: HBeAg seroconversion, serum ALT normalization rate and clearance of serum HBV DNA. RESULTS: At the end of treatment, HBe antigen-to antibody seroconversion was higher but not more significant in group 1 than group 2 (71.4% vs. 50.0%). Only one patient in group 2 who lost HBeAg, also cleared HBsAg. ALT normalization was similar in both groups (64.3% in group 1 vs. 55.6% in group 2). Clearance of serum HBV DNA was observed in 78.6% of patients in group 1 and 64.3% in group 2, but no significant differences. Complete response was similarly achieved in both groups (57.1% in group 1 vs. 50.0% in group 2). Interferon alpha therapy with prednisolone priming was well tolerated and all children finished therapy. CONCLUSION: The combined therapy with prednisolone followed by interferon alpha may be safe and effective in inducing a serological and biochemical remission of the disease in approximately 50% of children with chronic hepatitis B and with a high level of viral replication and less active disease. However, a controlled study should be performed to confirm these results.

Infant with Fanconi Anemia Presenting with Myelodysplastic Syndrome / 대한소아혈액종양학회지

PURPOSE: Fanconi anemia(FA) is a rare autosomal recessive disorder characterized by progressive bone marrow failure and congenital malformations. Patients with FA have aplastic anemia(> 90%), leukemia(10~15%), myelodysplasia(5%) and liver(5%) and other tumors(5%). In the International FA Registry study myelodysplasia in FA patients was detected at a median of 13 years. Presentation of FA with myelodysplasia in an infant should be extremely rare. CASE: A 3-month-old infant presented with anemia and poor feeding. The initial hemogram showed: hemoglobin, 4.6 g/dL; MCV, 104.1 fL/pg; white cell count, 4,300/microL; neutrophils, 450/microL; platelets, 23,000/microL. The bone marrow was normocellular, with findings of macrocytic anemia and dyserythropoiesis, and less than 5% of myeloid blasts, compatible with myelodysplastic syndrome(refractory anemia). The patient had multiple cafe-au-lait spots, hypopigmented nevi, broad nasal bridge, micrognathia, and thumb and toe anomalies. FA was confirmed by chromosomal hypersensitivity to diepoxybutane and mitomicin C. Supportive treatment with oxymetholone and prednisolone failed to improve hematologic and clinical findings. The patient succumbed to sepsis, pneumonia and meningitis due to Pseudomonas aeruginosa at 20 month of age. Clonal cytogenetic anomalies were not found. CONCLUSION: We reported here a rare case of FA presenting with myelodysplasia at the age of 3 month.