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The main chest X-ray findings that can suggest inactive TB are:<ref name=cdc/>
<br>1. '''Discrete fibrotic scar or linear opacity''' — Discrete linear or reticular densities within the lung. The edges of these densities should be distinct and there should be no suggestion of airspace opacification or haziness between or surrounding these densities. Calcification can be present within the lesion and then the lesion is called a “fibrocalcific” scar.
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File:Chest X-ray of fibrocalcific scar after secondary tuberculosis.jpg|Chest x-ray showing fibrocalcific scar after secondary tuberculosis as air-space opacification or haziness between or surrounding these densities.
