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The Journal of Thoracic and Cardiovascular Surgery, Vol 81, 825-829, Copyright © 1981 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Accuracy of computed tomographic scanning in assessment of the mediastinum in bronchial carcinoma

HH Rea, JE Shevland and AJ House

We believe that malignant involvement of mediastinum is a contraindication to attempted resection of bronchial carcinoma. It was hoped that computed tomographic (CT) scanning might improve our ability to assess the mediastinum prior to thoracotomy. The accuracy of CT scanning, performed with modern techniques, in assessment of the mediastinum of 22 patients with bronchial carcinoma has therefore been determined. In all the patients CT scan impressions have been correlated with the histologic findings at thoracotomy or mediastinoscopy. In detection of malignant involvement of the mediastinum, the CT scan had a sensitivity of 80% and a specificity of 76%. There was only one false negative CT scan report, and in this case the mediastinum was involved at a site which could not have been inspected at anterior cervical mediastinoscopy. We conclude that a negative CT scan makes mediastinoscopy an unnecessary screening procedure in determining resectability. Since there was a significant number of false positive CT scans, we feel that such a report necessitates tissue confirmation before the decision to withhold thoracotomy is made. The CT scan may help to determine the best test to achieve this tissue confirmation.

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