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Radiology, Vol 139, 381-384, Copyright © 1981 by Radiological Society of North America
ARTICLES |
JA Culham
Computed tomographic scans of the lower thorax were obtained of ten infants whose plain chest radiographs showed poorly defined right heart borders. Satisfactory studies in eight of these children showed the explanation of the silhouette sign. Pulmonary or pleural disease was seen in seven of the eight. In one, the thymus obscured the heart border. A poorly defined right heart border in children in the first year of life is often abnormal.
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