ABSTRACT
Background: Pulmonary Tuberculosis [TB] is traditionally classified into primary and post primary tuberculosis; both have distinct characteristics on radiology. Adetailed knowledge of different radiological patterns is helpful in diagnosis of TB
Objective: To determine the frequency of various radiological presentation of post primary tuberculosis in adult sputum smear positive patients
Methodology: This cross sectional study was carried out at Department of Pulmonology, Sheikh Zayed Medical College / Hospital, Rahim Yar Khan on adult sputum smear positive pulmonary TB patients. A total of 250 new cases of pulmonary TB with no previous history of Anti-Tuberculosis treatment were included in this study. Socio demographic data and findings of X -ray Chest from each sputum smear positive patient were collected and recorded on a predesigned performa. The data was entered and analyzed by using SPSS version 17
Result: Out of 250 patients, 146 were male and 104 were female with mean age of 35.76 +/- 16.25 years. Left lung was most affected in 40.4% cases, right lung in 35.6%, while 24% has bilateral involvement. Duration of illness prior to diagnosis was 3 +/- 1.66 months. Among the radiological presentation, cavitation was seen in 49.2% cases, alveolar consolidation in 42.4%, nodular pattern in 3.2%, reticulonodular pattern in 3.2% and reticular pattern in 2% cases. There was significant association of alveolar consolidation with male gender [0.03] while reticulonodular pattern was significantly seen in female gender [0.007]. Majority of the patients were young; 42.8% were below the age of 30 years and 82% patients were below the age of 50 years and there was a delay of > 03 months in the diagnosis
Conclusion: According to this study, cavitations and alveolar consolidation were the commonest radiological presentations of post primary TB. Majority of patients were young and there was a considerable delay in diagnosis