Clinical and Experimental Pediatrics

The Korean Pediatric Society (대한소아청소년과학회)
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Comparison of growth and neuropsychological function after treatment for hematologic and oncologic diseases in monozygotic twins

일란성 쌍생아에서 혈액 및 종양 질환 치료 후 성장 및 정신신경학적 발달에 대한 비교연구

  • Kim, Gi Hwan (Department of Pediatrics, St. Carollos Hospital) ;
  • Kook, Hoon (Department of Pediatrics, Chonnam National University Hwasun Hospital Chonnam National University Medical School) ;
  • Baek, Hee Jo (Department of Pediatrics, Chonnam National University Hwasun Hospital Chonnam National University Medical School) ;
  • Han, Dong Kyun (Department of Pediatrics, Chonnam National University Hwasun Hospital Chonnam National University Medical School) ;
  • Song, Eun Song (Department of Pediatrics, Chonnam National University Hwasun Hospital Chonnam National University Medical School) ;
  • Jo, Young Kook (Department of Pediatrics, Chonnam National University Hwasun Hospital Chonnam National University Medical School) ;
  • Choi, Ic Sun (Department of Pediatrics, Chonnam National University Hwasun Hospital Chonnam National University Medical School) ;
  • Kim, Young Ok (Department of Pediatrics, Chonnam National University Hwasun Hospital Chonnam National University Medical School) ;
  • Kim, Chan Jong (Department of Pediatrics, Chonnam National University Hwasun Hospital Chonnam National University Medical School) ;
  • Woo, Young Jong (Department of Pediatrics, Chonnam National University Hwasun Hospital Chonnam National University Medical School) ;
  • Yang, Soo Jin (Department of Psychiatry, Chonnam National University Hwasun Hospital Chonnam National University Medical School) ;
  • Hwang, Tai Ju (Department of Pediatrics, Chonnam National University Hwasun Hospital Chonnam National University Medical School)
  • 김기환 (순천성가롤로병원 소아과) ;
  • 국훈 (전남의대 화순전남대병원 소아과학교실) ;
  • 백희조 (전남의대 화순전남대병원 소아과학교실) ;
  • 한동균 (전남의대 화순전남대병원 소아과학교실) ;
  • 송은송 (전남의대 화순전남대병원 소아과학교실) ;
  • 조영국 (전남의대 화순전남대병원 소아과학교실) ;
  • 최익선 (전남의대 화순전남대병원 소아과학교실) ;
  • 김영옥 (전남의대 화순전남대병원 소아과학교실) ;
  • 김찬종 (전남의대 화순전남대병원 소아과학교실) ;
  • 우영종 (전남의대 화순전남대병원 소아과학교실) ;
  • 양수진 (전남의대 화순전남대병원 정신과학교실) ;
  • 황태주 (전남의대 화순전남대병원 소아과학교실)
  • Received : 2006.09.15
  • Accepted : 2006.10.30
  • Published : 2007.02.15
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Abstract

Purpose : The primary purpose of this study was to evaluate the growth and neuropsychologic function following treatments for pediatric hematologic and oncologic diseases. Healthy monozygotic twins served as ideal controls for comparison to exclude possible confounding factors. Methods : Seven children treated with various hematologic and oncologic diseases were included in the study: acute lymphoblastic leukemia (ALL; n=2), Diamond-Blackfan anemia twins (n=2), and aplastic anemia (n=3). The median age at the diagnosis was 5.2 (0.3-15) years. The median duration of follow-up was 7.2 (4.9-10) years. Controls were healthy monozygotic twins. Growth was measured and the percentile channels were evaluated sequentially for patients. The K-WISC III was applied and compared in 5 pairs of patients and controls. Results : Similar growth profiles were noted for the twins. The percentiles at diagnosis was 3-10 in 3, 25-50 in 2, and 50-75 in 2 cases. All patients stayed in their growth percentiles through follow-up, except for 1 patient who became obese. For IQ tests, the mean behavioral, verbal and full scale IQ scores of patients were 88.0, 93.8, and 89.8, respectively, and those from their corresponding controls were 92.2, 97.0, and 91.7 (P>0.05). However, 2 children who were treated for ALL had lower IQ scores. Conclusion : Similar growth profiles were observed in the monozygotic twins in terms of height and weight. The IQ scores of patients were similar to those of monozygotic twins. However, prophylactic CNS-directed therapy for leukemia might adversely affect the IQ scores. A further prospective study on larger number of twins is warranted.

목 적: 소아에서 혈액 및 종양질환 치료가 성장 및 신경정신기능에 미치는 영향을 알아보고자 본 연구를 시행하였다. 본 연구에서는 대조군을 일란성 쌍생아로 하여 여기에 영향을 주는 많은 인자들은 배제하였다. 방 법: 1995년 1월부터 2005년 6월까지 전남대학교병원 소아과에서 혈액 및 종양질환으로 치료받은 일란성 쌍생아 7명을 대상으로 하였다[급성 림프구성 백혈병, n=2; DBA, n=2; 중증 재생불량성 빈혈, n=3]. 이들의 진단 시 정중 연령은 5.2세(0.3-15세)이었고, 정중 관찰기간은 7.2년(4.9-10년)이었다. 대조군은 건강한 일란성 쌍생아 형제이었고, DBA를 가진 쌍생아는 1살 어린 동성의 동생을 대조군으로 사용하였다. 환자에게서 신장, 체중을 반복적으로 측정하여, 백분위수 통로를 평가하였다. 인지기능은 K-WISC III를 이용하였는데, 5쌍에서 비교가 가능하였다. 결 과: 성장은 환자와 건강한 쌍생아 간에 비슷한 양상을 보였다. 진단 시 3명의 환자에서 3-10 백분위수, 2명에서 25-50 백분위수, 그리고 나머지 2명에서는 50-75 백분위수를 보였다. 비만아가 된 1명을 제외하고 나머지 환자들은 추적관찰기간 동안 자신의 백분위수 통로를 유지하였다. IQ 검사 결과를 보면 행동성, 언어성, 전체 지능 지수의 평균치는 각각 88.0, 93.8과 89.8이었고, 대조군에서는 각각 92.2, 97.0과 91.8로 차이가 없었다. 하지만 급성 림프구성 백혈병으로 치료받은 두 명의 환아는 부분적 인지기능 저하가 나타났으며 그 중 방사선조사를 받은 환아에서는 인지기능 저하 외에도 심리적 장애인 주의력결핍 과다행동증후군이 나타났다. 결 론: 신장과 체중으로 본 성장은 환자나 일란성 쌍생아 형제나 비슷한 소견을 보였다. 환자의 IQ 지수는 쌍생아 대조군과 비슷하였다. 하지만 중추신경계 예방요법을 시행한 백혈병 환자에서는 IQ 지수가 낮아 질 수 있었다. 이러한 치료가 성장 및 정신신경 기능에 미치는 연관성을 정확히 알기 위해서는 더 많은 쌍생아에서의 전향적 연구가 필요할 것이다.

Keywords

References

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