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Chest x-ray lines and stripes

Chest x-ray lines and stripes are important to recognise on chest radiographs

Lines are usually less than 1mm in width and are comprised of tissue outlined on either side by air and typically represent pleural-covered structures within the middle and superior mediastinum 1, 2:

Stripes, on the other hand, are thicker than lines, and are seen when these thicker anatomical structures are outlined by air  1, 2:

A third important part of chest x-ray lines and stripes are the interfaces, which are the borders of solid structures with air 2:

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