There is an osteolytic sternal lesion with surrounding collection of fluid density with peripheral enhancement, extending to the retrosternal space, anterior to the left innominate vein. Multiple lymphadenopathies with central necrosis are seen in the right hilum, right paratracheal region, carinal and subcarinal spaces. The lung window shows centrilobular nodular opacities with "tree-in-bud" pattern involving the right lower lobe mainly the superior and mediobasal segments.