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목 적 : 건강하게 출생한 신생아에서 단순하게 귓바퀴 앞 쥐젖만을 동반한 경우에 신 기형이 동반되는가를 조사하고자 하였다.방 법 : 1995년 1월부터 2003년 6월까지 만 8년 6개월간 원광대학 병원에서 출생한 신생아 중 귓바퀴 앞 쥐젖을 동반하여 신 초음파를 시행하였던 신생아를 대상으로 차트를 검토하여 후향적으로 조사하였다. 염색체 이상, 귀의 이상 그리고 주 선천성 기형이 동반된 경우는 제외하였으며, 같은 시기에 단지 구토만을 주소로 초음파를 시행하였던 신생아를 그 비교 군으로 하였다.


Purpose:The aim of this study was to determine the role of renal ultrasonography in neonates with isolated preauricular tags. Methods:We performed a retrospective study of 10,997 newborn infants delivered from January 1995 to June 2003 in Wonkwang University Hospital. Nineteen newborns born with isolated preauricular tags were assessed for renal anomalies by performing renal ultrasonography within one week after birth. The study group was compared with a control group of 25 healthy neonates without preauricular tags during the same period, also using renal ultrasonography. Results:Preauricular tags were detected in 19 of 10,997(0.17%) neonates; 57.9% were found on the right side. Renal anomalies in neonates with isolated preauricular tags were detected in four infants (21.1%); this incidence was higher, but was not significant, compared with the control group. Types of anomalies were mild hydronephrosis of grade 1(3 cases) and 2(1 case) which were normalized within one year. Conclusion:Routine renal ultrasonography is not recommended for newborn infant with isolated preauricular tags.