Table 3:

Findings on radiographs obtained at the initial Hospital for Sick Children clinic visit

Finding	No. of children	No. (%) with positive IGRA result
Any abnormality	53	4 (8)
Abnormal on second review	31	4 (13)
Suggestive of tuberculosis^*
Intrathoracic lymphadenopathy	3	1 (33)
Parenchymal disease	1	0 (0)
Questionable abnormality
Peribronchial thickening	13	1 (8)
Nodule/vessel	6	1 (17)
Atelectasis	4	0 (0)
Other^†	4	1 (25)

Note: IGRA = interferon-γ release assay.
↵* Using criteria of Graham and colleagues. (8)
↵† Includes possible pleural thickening (2 children), question of calcified nodule (1 child) and possible areas of lucency (1 child).