RESULTS: The mean age was 64.3 ± 11.2, the proportion of males to females was 2.3 : 1. The mean number of destroyed bronchopulmonary segments was 6.3 ± 2.5 (range 3-14). Cicatrization atelectasis and bronchiectasis are most commonly found. Obstructive ventilatory defects were observed in 88 cases (54%), followed by mixed (n=31) and restrictive ventilatory defect (n=25). The number of destroyed bronchopulmonary segments showed a significant negative correlation with FVC, % predicted (r=-0.298, p < 0.01) and FEV1, % predicted (r=-0.290, p < 0.01). Dyspnea (n=145) was the most common cause requiring a visit to the hospital, followed by pneumonia (n=68) and hemoptysis. The hospitalization rate was 66% and the median number of hospitalizations was 2 (range 1-19). Pneumonia was the most common cause requiring hospitalization. During the follow-up period, tuberculosis was reactivated in 24 patients (14.8%) and sputum specimens of 13 patients showed positive cultures for non tuberculous mycobacteria.