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The Journal of Thoracic and Cardiovascular Surgery, Vol 94, 57-63, Copyright © 1987 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Computed tomography for the evaluation of intrathoracic invasion by lung cancer

EA Rendina, DA Bognolo, TC Mineo, GF Gualdi, M Caterino, C Di Biasi, F Facciolo and C Ricci

We conducted computed tomographic examinations of the chest in 171 patients with lung cancer whose disease was subsequently surgically staged; routine mediastinal exploration was undertaken in all patients undergoing thoracotomy (151), and in 20 patients only anterior mediastinotomy or mediastinoscopy was performed. We have considered three groups of patients: In Group I (including all 171 patients) mediastinal lymph nodes were evaluated for metastatic involvement; nodes were considered diseased when greater than 1 cm. Sensitivity, specificity, and accuracy were 95%, 83%, and 89%. Among these 171 patients, 34 (Group II) had a central tumor otherwise considered operable, which was shown on plain roentgenograms to be in contact with the mediastinum; infiltration of hilar and mediastinal vessels and of mediastinal tissues was investigated preoperatively with computed tomography and then ascertained at thoracotomy. Sensitivity, specificity, and accuracy were 68%, 72% and 70%. Twenty-seven patients (Group III) had a peripheral tumor abutting the pleural surface and suspected to invade the parietal pleura and chest wall; patients with evident bone infiltration were excluded. Sensitivity, specificity, and accuracy of computed tomography were 50%, 90%, and 65%.

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