Table 3 Chest radiographic features of subclinical pulmonary tuberculosis in patients with and without a computed tomographic scan
Feature | Total No. (%) | Subclinical PTB Cases | p value | |
|---|---|---|---|---|
CXR Alone No (%) | CXR and CT No (%) | |||
No. assessed | 286 | 192 | 94 | |
Category | ||||
Typical | 195 (68.2) | 133 (69.3) | 62 (66.0) | 0.037 |
Atypical | 41 (14.3) | 21 (10.9) | 20 (21.3) | |
Normal | 50 (17.5) | 38 (19.8) | 12 (12.8) | |
Laterality | ||||
Unilateral disease | 162 (56.6) | 106 (55.2) | 58 (61.7) | 0.438 |
Bilateral disease | 70 (24.5) | 46 (24.0) | 22 (23.4) | |
Normal | 54 (18.9) | 40 (20.8) | 14 (18.9) | |
Cavitation | ||||
Yes | 19 (6.6) | 12 (6.3) | 7 (7.4) | 0.703 |
No | 267 (93.3) | 180 (93.8) | 87 (92.6) | |
Acinar shadows† | ||||
Yes | 19 (6.7) | 12 (6.9) | 7 (7.4) | 0.728 |
No | 264 (93.3) | 177 (93.7) | 87 (92.6) | |
Lymph node enlargement | ||||
Yes | 9 (3.1) | 4 (2.1) | 5 (5.3) | 0.16 |
No | 277 (96.9) | 188 (97.9) | 89 (94.7) | |
Extent of parenchymal disease | ||||
Normal | 54 (18.9) | 40 (20.8) | 14 (14.9) | 0.179 |
Minimal | 193 (67.5) | 131 (68.2) | 62 (66.0) | |
Moderately advanced | 37 (12.9) | 20 (10.4) | 17 (18.1) | |
Far advanced | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
Miliary | 2 (0.7) | 1 (0.5) | 1 (1.1) | |
