Year: 2009
Type: conference-abstract
Abstract: Aortic arch anomalies refer to a variety of congenital abnormalities involving aortic arch course and/or branching pattern. Those commonly seen include right aortic arch with aberrant left subclavian artery, left aortic arch with aberrant right subclavian artery, right aortic arch with mirror-image branching, double aortic arch and circumflex retroesophageal aortic arch. Reviewing of 10 years literature showed no report of antenatal diagnosis of right ductus arteriosus, however there are reports of right ductus arteriosus diagnosed postnatally by MRI, angiography, cardiac catheterization, 2D echocardiogram. Interestingly some were discovered during ligation of PDA. We report a case of a ductus arteriosus in a fetus with right aortic arch. A 28-year-old woman, gravida 2 para 1, had routine second trimester ultrasound examination in our antenatal diagnostic center at 21.3weeks. We found a right aortic arch and right ductal arch on 3 vessel and trachea (3VT) view. The thymus was visualized. The rest of fetal structures appeared normal. A normal fetal karyotype (46,XX) was found, with no evidence of microdeletion of chromosome 22q on fluorescence in-situ hybridization. Patient delivered a female infant by vaginal birth at 36.7week's gestation. After delivery, echocardiography was done, and moderate perimembranous ventricular septal defect was found. The baby was well and no complications were found. Right aortic and right ductal arch can be diagnosed prenatally, with the use of the 5 plane views of Yagel, especially with the 3VT view. Isolated right aortic arch and the right ductal arch is a benign vascular anomaly with no known postnatal complications. However, a detailed evaluation of the fetal cardiac structures and karyotying has to be considered due to its association with cardiac/non-cardiac malformations and microdeletion 22q11 syndrome. Right ductal arch is rare and should be diagnosed before ligation of PDA in the neonates.
DOI: 10.1002/uog.7046
Authors: X. Zhang, Y. L. Yan, T. Foo, J. V. Tan, G. Yeo
Institution: KK Women's and Children's Hospital
Language: English
Subfield: Epidemiology
Field: Medicine
Domain: Health Sciences
Open Access status: bronze
OpenAlex ID: W1970597440