Fig. 37From: Mimics in chest disease: interstitial opacitiesLymphocytic interstitial pneumonia. HRCT at the level of the upper lobes reveals a “cystic pattern” characterised by few thin–walled “true” cysts that may have rounded or more lobulated shape. The history of immunosuppression (AIDS, Sjogren, autoimmune disorders, dysproteinemia) favours the specific diagnosis of LIPBack to article page