Right sided aortic arch - fetal ultrasound

Case contributed by Bahman Rasuli
Diagnosis almost certain

Presentation

Primigravida for the 20-week anomaly scan. No complaints. 11-13 weeks scan was normal.

Patient Data

Age: 35 years
Gender: Female

Normal fetal situs.

'U' configuration of the pulmonary artery and aortic arch.

The trachea is seen within the 'U'. 

Four-chamber view - LVOT and RVOT are normal.

Rest of the fetal anatomical survey was normal.

Fetal maturity corresponded to last menstrual period (LMP).

Case Discussion

Fetal echocardiography findings are compatible with a right-sided aortic arch in a fetus of 20 weeks gestation.

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