Atrial septal defect chest x ray
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Priyamvada Singh, M.B.B.S. [2]; Cafer Zorkun, M.D., Ph.D. [3]; Assistant Editor(s)-In-Chief: Kristin Feeney, B.S. [4]
Overview
Chest x rays may be used as a diagnostic tool in the evaluation of an atrial septal defect. As a modality, chest x rays can be limited in diagnostic imaging quality and may often be elected to be used in conjunction with other imaging techniques. The chest x-ray may show right ventricular and right atrial enlargement, a prominent pulmonary artery segment, and increased pulmonary vascularity, Cardiomegaly due to dilatation of the right atrium, and right ventricular can be seen, Prominent pulmonary artery, Increased pulmonary vascular markings.
Common Findings
In an anteroposterior view, one may see:
1) Prominent pulmonary vascular markings on the chest[1]
2) Cardiomegaly due to right atrial and ventricular enlargement.[1]
3) Normal apperance of the left atrium and left ventricle
4) Triangular appearance of the heart
- Results from enlargement of pulmonary arteries preventing the ascending and transverse aorta from forming normal heart borders
5) Scimitar sign, a vertical, modestly curved, density in the right-side of the pericardium, may be visible
- Commonly associated with the sinus venosus atrial septal defect
- Results from the point of insertion of the pulmonary vein into the inferior vena cava
- May cause abnormal densities within the chest x ray
6) Dilatation of the superior vena cava can be seen in sinus venosus defect
Less Common Findings
- Normal appearance of heart vasculature
- Left heart enlargement/left atrial enlargement
- Pulmonary edema
- Pulmonary venous hypertension
Imaging
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Enlarged right atrial border and mild cardiomegaly.
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Lateral view
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Post repair. Enlarged right atrial border and mild cardiomegaly.
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Post repair. Lateral view.
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ASD. Another patient. Enlarged right atrial border and advanced cardiomegaly.
