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The Efficacy of Fetal Ultrasonography and Postnatal Abdominal Ultrasonography for the Diagnosis of Neonatal Abdominal Mass

Journal of the Korean Pediatric Society 1998;41(3):299-306.
Published online March 15, 1998.
The Efficacy of Fetal Ultrasonography and Postnatal Abdominal Ultrasonography for the Diagnosis of Neonatal Abdominal Mass
Hee Eun Lee1, Ee Kyung Kim1, Hee Seok Kim1, Yun Kyoung Lee1, Chan Hwu Park1, Kyung Ran Park1, June Dong Park1, Beyong Il Kim1, Woong Heum Kim1, Jung Hwan Choi1, Gui Won Park2, Hwang Choi3, Yong Choi1, Chong Ku Yun1
1Departments of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
2Departments of Pediatric Surgery, Seoul National University College of Medicine, Seoul, Korea
3Departments of Urology, Seoul National University College of Medicine, Seoul, Korea
신생아 복부 종괴의 진단에 있어서 산전 태아 초음파검사 및 출생후 복부 초음파검사의 유용성
이희은1, 김이경1, 김희석1, 이윤경1, 박찬후1, 박경란1, 박준동1, 김병일1, 김웅흠1, 최중환1, 박귀원2, 최황3, 최용1, 윤종구1
1서울대학교 의과대학 소아과학교실
2서울대학교 의과대학 외과학교실
3서울대학교 의과대학 비뇨기과학교실
Correspondence: 
Hee Eun Lee, Email: 1
Abstract
Purpose
: Most neonatal abdominal masses are benign in nature, but early detection and management is important to avoid the development of complications. So, we studied the causes of neonatal abdominal masses and the efficacy of ultrasonography for early detection and diagnosis.
Methods
: We reviewed 36 newborn infants with abdominal masses who had been admitted to the nursery and Neonatal Intensive Cave Unit of Seoul National University Children's Hospital from Jan. 1, 1989 to Dec. 31, 1995.
Results
: The mean gestational age was 38 weeks and the male to female ratio was 22 : 14. All masses were benign and the most common etiology was hydronephrosis(41.7%). The following etiologies were multicystic dysplastic kidney, polycystic kidney, ovarian cyst, hemangioendothelioma, teratoma, meconium peritonitis, mesenteric cyst and intestinal duplication cyst. All except one were detected before the first 48hours, and among them, 32 cases(88.9%) detected antenatally. All patients except one who died shortly after birth, were examined by abdominal ultrasonography, and 31 of 35 masses(88.6%) had the same diagnosis of ultrasonography. Five cases had associated abnormalities in the opposite kidney and other organs.
Conclusion
: The most common etiology of neonatal abdominal masses was hydronephrosis and majority of masses originated from genitourinary system. Most abdominal masses were detected antenatally and abdominal ultrasonography was an efficient method for the diagnosis of neonatal abdominal masses.
Key Words: Fetal ultrasonography, Postnatal abdominal ultrasonography, Neonatal abdominal mass


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