Sarcoidosis is a systemic entity characterised by the development of non-caseating granulomatous inflammation [22] . The most common parenchymal findings include irregular thickening of the bronchovascular bundles and small nodules in a perilymphatic distribution. Ground-glass attenuation and crazy-paving pattern are also described in sarcoidosis [1] . The linear pattern is caused by interstitial fibrosis.