Source: Annual Congress 2002 - Diagnosis of tuberculosis
Disease area: Respiratory infections

Abstract

For the diagnosis of pulmonary tuberculosis (PTB) the gold standard test is bacterial culture. Since culture takes relatively longer (4-8 weeks) time, new and faster techniques are required for early diagnosis. The aim of this study was to assess the efficiency of high resolution computerized tomography (HRCT) in detecting the activity of PTB. Sixty seven patients with active PTB were included into the study. Of these 67 patients 66 (98.5%) had centrilobular nodule or branching linear structures, 65 (97%) had acinary nodule, 55 (82%) had consolidation, 55 (82%) had cavities, and 54 (80.5%) had tree in bud appearance. In 52 patients radiographic findings were bilateral. In 30 patients with inactive PTB 26 (86.6%) had fibrotic changes, 20 (66.6%) had bronchiectasis, 18 (60%) had bronchovascular distortion, and 14 (46.6%) had pericicatricial emphysema. The sensitivity of thorax HRCT in determining the activity of PTB was determined as 97% and specificity was 87%. The positive predictive value was 94.2% and negative predictive value was 92.8%. As a conclusion our results showed that thorax HRCT is a reliable diagnostic method in patients with PTB.

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A. Balkan, E. Balci, I. Yuksekol, M. Ozkan, Y. Taşan, Y. Pabuscu, K. Ekiz, H. Bilgic, N. Demirci, O. Seber (Ankara, Turkey). The diagnostic value of high resolution computerized tomography in pulmonary tuberculosis. Eur Respir J 2002; 20: Suppl. 38, 1073

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