15) The consolidation is typically predominant in the middle and lower lung zones
with a subpleural or peribronchovascular distribution.
8 Table 2: Mean lung attenuation measured in inspiration and correlation of FEV1 and FEF 25-75% with air trapping in different lung zones
0 Lung zones
involved >2 zones 68 (69) 58 (63) Extent of the disease Bilateral 64 (65) 47 (51) Initial 1+ 28 (29) 43 (47) smear 2+ 49 (50) 38 (41) grading 3+ 21 (21) 11 (12) Initial [less than or 4 (4) 12 (13) equal to] 1+ culture 2+ 19 (19) 23 (25) grading 3+ 75 (77) 57 (62) Figures in parentheses are percentages HIV-TB (n=88) All (n=278) Sex Males 72 (82) 216 (78) Age (yr) Median 34.
In healthy subjects at the peak of hypoxia, the pulmonary flow in the upper lung zones
increased by 24% and in lower lung zones
, in contrary, reduced approximately to the same value.
A chest radiograph taken at a local hospital revealed category 2/3 profusion of small, nodular opacities in the middle and lower lung zones
, consistent with silicosis.
Unilateral opacity occurred predominantly in the upper lung zones
A chest X-ray showed heterogeneous right-sided opacity in the middle and lower lung zones
Specifically, there were no pulmonary micronodules that are typical of GLILD, and there was no pleuroparenchymal thickening in the upper lung zones
, which is typical of PPFE.
Chest radiography showed several nodules in the lower lung zones
The overall mean percentage (peak radiographic opacification) of lung parenchymal involvement was calculated by averaging the percentage involvement of the six lung zones