Journal of Genetic Medicine

Korean Society of Medical Genetics and Genomics (대한의학유전학회)
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Ten-year Clinical Study of Chorionic Villus Sampling

융모막 융모생검 511례에 대한 임상적 연구: 10년(2000-2010년)간의 경험

  • Kim, Soo-Hyun (Department of Obstetrics and Gynecology, Fertility Center of CHA Gangnam Medical Center, CHA University) ;
  • Shim, Sung-Han (Genetics Laboratory, Fertility Center of CHA Gangnam Medical Center, CHA University) ;
  • Baek, Jong-Woo (Department of Obstetrics and Gynecology, Bundang CHA Hospital, CHA University) ;
  • Cha, Dong-Hyun (Department of Obstetrics and Gynecology, Fertility Center of CHA Gangnam Medical Center, CHA University)
  • 김수현 (차 의과학대학교 강남차병원 산부인과) ;
  • 심성한 (차 의과학대학교 유전학교실) ;
  • 백종우 (차 의과학대학교 분당차병원 산부인과) ;
  • 차동현 (차 의과학대학교 강남차병원 산부인과)
  • Received : 2011.02.14
  • Accepted : 2011.05.30
  • Published : 2011.03.01
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Abstract

Purpose: We evaluated indications for chorionic villus sampling (CVS), the positive predictive value of CVS for fetal chromosomal abnormalities, and the fetal loss rate after CVS at CHA Medical Center. Materials and Methods: We reviewed the medical records of 511 cases of CVS performed between 67 and 120 days of gestation for prenatal cytogenetic diagnosis from April 2000 to April 2010. Fetal karyotypes were obtained by direct and indirect culture methods. Results: The most common indications for CVS were abnormal ultrasonic findings including increased nuchal translucency (294/635, 46.3%). The positive predictive value of abnormal karyotyping according to indication for CVS was highest in cases with abnormal parental karyotypes (14/21, 66.7%). Mosaicism revealed by CVS comprised 3.1% of the sample (16/509). Amniocentesis revealed two cases of true mosaicism and 11 cases of confined placental mosaicism. The fetal loss rate within 4 weeks of the procedure was 1.2% (6/511). Conclusion: If CVS is performed by an expert clinician, it is a feasible and reliable procedure for prenatal genetic diagnosis. When CVS indicates mosaicism, the finding should be confirmed by amniocentesis to distinguish true mosaicism from confined placental mosaicism.

목적: 본원에서 최근 10년간 시행한 융모막 융모생검의 적응증에 따른 결과 및 합병증을 조사하고 현재 사용하고 있는 융모막 융모생검의 효용성을 분석해보고자 한다. 대상 및 방법: 2000년 4월부터 2010년 4월까지 최근 10년간 분당차병원 및 강남차병원에서 융모막 융모생검을 시행한 511례의 진료기록 및 검사 결과를 검토하였다. 각각의 환자에 해당되는 모든 적응증을 조사하고 중복을 허용하여 분석하였다. 태아 염색체 검사는 직접법과 배양법을 통하여 시행하였다. 결과: 각각의 적응증을 살펴보면 태아의 비후된 목덜미 두께를 포함한 비정상 초음파 소견이 294례(294/635, 46.3%)로 가장 높았다. 각각의 적응증에 따른 태아 염색체 이상의 양성예측도는 부모 중에 염색체 이상이 있는 경우가 66.7%(14/21)로 가장 높았다. 융모막 융모생검 상 모자이시즘은 3.1% (16/509)였고, 그 중에서 양수검사로 확인된 진모자이시즘은 2례, 태반에 국한된 모자이시즘은 11례였다. 융모막 융모생검 이후 4주 이내에 임신 종결된 경우는 6례로 태아손실률은 1.2% (6/511)였다. 결론: 융모막 융모생검은 산전 유전진단을 하는데 있어서 적합하고 신뢰할 수 있는 시술이다. 융모막 융모생검 결과 모자이시즘을 보이는 경우 반드시 양수검사를 통하여 진모자이시즘인지 태반에 국한된 모자이시즘인지 확인이 필요하다.

Keywords

References

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