Information on 3 IACs with chest radiograph result: “Abnormal, consistent with TB” Patient #1 Gender Female Age 23 months Country of TB related symptoms TST induration Excerpts from official CXR Origin on presentation?* (mm) reading Nepal No 7.5 Subsequent action and CXR interpretation “patchy parenchymal disease in the CXR reviewed by TB specialist at the county right middle lobe… may represent TB clinic and interpreted as pneumonia. Child atelectasis, infiltrate and/or fibrosis received standard treatment for pneumonia and which may be related to pulmonary had resolution on CXR. Child started on LTBI TB.” treatment. “cardiomegaly and increased #2 Male 9 months Guatemala No 16.9 perihilar markings which [were] CXR reviewed by pediatric radiologist who difficult to distinguish from was aware of the child’s diagnosis of lymphadenopathy.” CT scan Tetralogy of Fallot. CXR interpreted as recommended for further showing no evidence of pulmonary TB. Child evaluation. started on LTBI treatment “Possible right hilar adenopathy #3 Female 16.5 months Philippines No 12 and bilateral prominent lung CXR reviewed by pediatric radiologist and markings. This may be due to interpreted as showing “no pathology reactive airway disease, however in indicating TB with a normal hilum and poor the setting of positive PPD, a CT inspiratory effort. No follow up studies scan [was] recommended for recommended.” Child started on LTBI further evaluation.” treatment *TB related symptoms include cough, wheezing, rash, fever, weight loss, decreased appetite, decreased activity, musculoskeletal pain, lymph node swelling, personality changes or jaundice 24