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Table 3 The association between IGRA results and chest radiologic findings of healed tuberculous infections

From: Chest roentgenography is complementary to interferon-gamma release assay in latent tuberculosis infection screening of rheumatic patients

IGRA Positive
N = 46
Negative
N = 178
Indeterminate
N = 14
Age 57.9 ± 11.2 51.7 ± 15.6 a 59.2 ± 11.1
Sex (M/F) 19/27 52/126 2/12
CXR-old-TB n (%) 11 (23.9)b,c 30 (16.9) d 2 (14.3) e
Fibrotic lesions 7c 17 2
Calcified nodules 3 10 0
Local bronchiectasis 1 6 0
Thin wall cysts 1 0 0
Hilar calcifications 0 0 0
  1. a p < 0.01 by ANOVA
  2. b Positive vs negative: odd ratio 1.55, 95% CI: 0.71–3.39, p = 0.27
  3. c One subject had Mycobacterium gordonae colonization; Two subjects had previous history of complete pulmonary tuberculosis treatment
  4. d One subject had Mycobacterium tuberculosis infection during follow-up period
  5. e One subject had previous history of complete pulmonary tuberculosis treatment
  6. IGRA interferon gamma release assay, CXR-old-TB radiographic findings suggestive of pulmonary tuberculosis sequelae