Madurai Scan. India.

Case report

This is a case of a healthy G2 P1 with a non-contributive family and personal history. Patient was referred to our department at 23 weeks of gestation. We diagnosed an isolated Right aortic arch with left ductus arteriosus. The aorta was on the right of the trachea and pulmonary trunk and ductus arteriosus were on the left of the trachea. these vessels formed a vascular ring around the trachea, so called "U-sign".   

There were no other associated findings detected on the ultrasound examination. Patient wished for the pregnancy termination based on the ultrasound findings.

Images 1,2: Images show a 4-chamber view with the aorta descending on the right.