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a Lateral chest radiograph of a 58-year-old smoker man allergic to iodine shows a well-defined mass (*) in the cardiophrenic space and a nodular lung opacity (open arrow) in the lower lung parenchyma. b, c Non-contrast-enhanced CT scan confirms the presence of a fluid-attenuation mass (*) in the right cardiophrenic angle (pericardial cyst) and demonstrates a suspicious lung opacity (open arrows) in the right lower lobe of the lung (squamous-cell carcinoma)
