Hello, I did TB skin test. it shows positive. The Dr asked to do Xrays and the Xrays report states:" FINDINGS: PA and lateral views of the chest were obtained. The heart, mediastinum and pleural surfaces are within normal limits for the patient's stated age. There is no pleural thickening or effusion. The osseous structures are intact.

IMPRESSION: Normal chest X-ray.
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what does this mean?