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Radiology, Vol 138, 107-113, Copyright © 1981 by Radiological Society of North America

ARTICLES

Computed tomography in the evaluation of mediastinal widening

RL Baron, RG Levitt, SS Sagel and RJ Stanley

Computed tomography was employed in 71 patients to assess a widened mediastinum detected on plain chest radiography. In 92% of the patients, CT correctly identified normal variants, sift-tissue density masses or vascular abnormalities as the cause of mediastinal widening. In 8% of the scans, all performed early in our experience, CT diagnosis was indeterminate (4%) or incorrect (4%). In 58% of the cases, a specific and correct CT diagnosis was made, which obviated further and more invasive diagnostic evaluation. CT scanning can differentiate vascular from avascular causes of mediastinal widening, and provide a specific and conclusive diagnosis in many instances. Invasive diagnostic procedures should be reserved for the few cases in which CT is indeterminate or additional preoperative information is required.




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