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A 14-year-old boy unresponsive to wide-spectrum antibiotics. An axial non-contrast chest CT shows diffuse opacities with a rounded morphology and visible halo sign with both central and peripheral distribution and with relative subpleural sparing. Bilateral subpleural intralobular reticulations can be seen superimposed on the ground glass opacities, resulting in a crazy paving pattern of the posterobasal segments of the lower lobes
