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소아 Nutcracker 증후군의 자연 소실

Spontaneous Resolution of Childhood Nutcracker Syndrome

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참고문헌

주제분류소아과학

초록

목 적 : Nutcracker 증후군은 복부대동맥과 상장간막동맥 사이에서 좌신정맥이 압박되어 혈뇨가 나타나는 질환으로 평소 건강한 소아에서 비사구체성 혈뇨가 발생하였을 때 감별 진단해야 할 질환 중 하나이다. 본 연구의 목적은 도플러 초음파 검사를 통하여 nutcracker 증후군을 진단 받은 환아에서 추적 도플러 초음파 검사상 nutcracker 증후군이 자연 소실된 환자들의 특성을 알아보고 성별, 진단시 연령, 단백뇨 여부, 최고 혈류 속도비와 nutcracker 증후군의 소실 시기간의 연관성을 확인하는 것이다. 방 법 : 2001년 5월부터 2005년 12월까지 혈뇨 또는 단백뇨로 소아 신장과를 내원한 소아에서 도플러 초음파로 nutcracker 증후군을 진단 받은 117명 중 추적관찰 위한 도플러 초음파 검사상 nutcracker 증후군이 자연 소실 된 26명을 대상으로 자연 소실의 평균 기간을 구하고 성별, 진단시 연령, 단백뇨 여부, 최고 혈류 속도비에 따른 자연 소실 시기를 비교하였다. 결 과 : 평균 1.2년간의 추적 관찰 기간 중 59%에서 nutcracker 증후군의 자연 소실이 확인되었다. 진단에서부터 소실까지 걸린 기간은 16.71±9.99개월(범위 6.0-49.2) 이었으며 소실 시기와 성별, 진단시 연령, 단백뇨 여부, 좌신정맥의 최고 혈류 속도비를 각각 비교하였을 때 유의한 차이가 없었다. 결 론 : 도플러 초음파 검사로 진단된 nutcracker 증후군의 반 이상이 소실되었다. Nutcracker 의 소실 시기는 성별, 진단시 연령, 단백뇨 여부, 좌신 정맥의 최고 혈류 속도비와 무관하였다.

Abstract

Purpose : Nutcracker syndrome refers to compression of the left renal vein(LRV) between the aorta and superior mesenteric artery(SMA) that results in elevation of pressure in the LRV and development of collateral veins. It must be considered as a possible factor when hematuria or proteinuria occurs in a healthy child. The purpose of this study is to determine the time to spontaneous resolution in childhood nutcracker syndrome, and to observe whether this is affected by sex, age, proteinuria or initial ratio of peak velocity of LRV. Methods : We investigated 26 patients who were found to have spontaneous resolution by follow-up Doppler ultrasonography among 117 patients diagnosed with nutcracker syndrome by renal Doppler ultrasonography from May 2001 to December 2005. We determined the time to spontaneous resolution in childhood nutcracker syndrome, and observed whether the duration was affected by sex, age, proteinuria or initial ratio of peak velocity. Results : 26 patients(59%) achieved spontaneous resolution by 1.2 years(mean). The time to spontaneous resolution of childhood nutcracker syndrome in 26 patients was 16.71±9.99 months(range 6.0-49.2). The time to spontaneous resolution was not affected by sex, age, proteinuria nor initial ratio of peak velocity of LRV. Conclusion : More than half of the patients who were diagnosed by renal Doppler ultrasonography achieved spontaneous resolution. The time to spontaneous resolution was not affected by sex, age, proteinuria nor initial ratio of peak velocity of LRV.

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