ABSTRACT
Objective To observe the features of fetus unilateral pulmonary agenesis in antenatal ultrasonography and analyse the causes of misdiagnosed,so that fetus unilateral pulmonary agenesis can be known more deeply.Methods From January 2012 to October 2017,8 fetuses underwent prenatal ultrasound examination of fetal system in Guangdong Maternal and Child Health Hospital.The prenatal ultrasound data and postnatal clinical data were retrospectively analyzed.Results Among 8 cases of unilateral pulmonary agenesis,there were 4 males and 4 females,5 cases involving right lung,3 cases involving left lung,3 cases of single lung absence,and 5 cases combined with other deformities.There were 4 cases of induced labor,and 4 cases of surviving children were confirmed unilateral pulmonary agenesis by chest computed tomography (CT) examination.2 cases of missed prenatal diagnosis were left pulmonary agenesis,including 1 case only found left pulmonary artery absence and 1 case only found left axis deviation and cardiac enlargement before delivery.Conclusions Cardiac displacement and absence of left or right pulmonary artery are important clues for prenatal ultrasound diagnosis of fetal unilateral pulmonary absence.Prenatal ultrasound is the preferred method to detect and diagnose fetal unilateral pulmonary absence.
ABSTRACT
ObjectiveTo explore the ultrasound characteristics of coronary artery fistula to improve its prenatal diagnosis.MethodsImaging data for 12 fetuses with coronary artery fistula who underwent fetal echocardiography at our hospital from June 2005 to December 2013 were retrospectively analyzed to summarize the ultrasound characteristics of coronary artery fistula.ResultsOf the 12 fetuses, 7 were confirmed with coronary artery fistula by echocardiography after birth, and the remaining 5 were aborted due to other cardiac abnormalities (since an autopsy was not performed, the diagnosis of coronary artery fistula could not be confirmed). Of the 7 confirmed cases, 1 had left coronary artery-to-right atrium fistula, 3 had left coronary artery-to-right ventricle fistula, and 3 had right coronary artery-to-right ventricle fistula; 1 had left coronary artery-to-right ventricle fistula with muscular ventricular septal defect, and 6 had simple coronary fistula. Two-dimensional ultrasound examination revealed that coronary arteries were displayed in all cases, and the diameter ranged from 1.8 to 4.0 mm. Color Doppler ultrasound clearly showed the fistula size, course and the situation fistulas drained into heart chambers. Diastolic regurgitation signal could be detected in the ascending aorta and aortic arch.ConclusionCoronary artery fistula can be diagnosed by color Doppler ultrasound combined with spectral Doppler ultrasound when the fetal coronary artery expands.