Fig. 4

Chest X-ray findings in TB and TB-DM patients. a total percent lung involvement (combined pathology in upper, middle and lower zones of the left and right lungs), b percent lung involvement in the upper zone, c percent lung involvement in the middle zone, and d percent lung involvement in the lower zone was assessed in TB (n = 35) and TB-DM (n = 36) patients at enrolment and after 1, 2 and 6 months of anti-TB treatment. Note that each of the three zones in the two lungs could have a maximum of 100% pathological involvement, and therefore the total percent lung involvement in the upper, middle or lower zones, respectively, could be maximum 100 + 100 = 200% (b-d), while the total percent lung involvement including all three zones in both lungs in a patient could be maximum 3 × 100 × 2 = 600% (a). Data is presented as median values. Statistical differences between the TB and TB-DM group were calculated using the Mann-Whitney U-tests, and p < 0.05* was considered significant