Evidence of previous surgeries (aortic valve replacement and repair of aneurysm & dissection of the ascending aorta) are noted. A sizeable fluid collection (likey a liquefied hematoma or seroma) measuring ~ 7 x 9 cm, exerting mass effect over the SVC, main pulmonary trunk & the right pulmonary artery, is seen around the ascending aorta. A focal area of high attenuation is seen within this collection close to the aortic root, in arterial & venous phases of the scan, which is likely an endoleak. Segmental consolidation/collapse is seen in the basal segments of the right lower lung lobe with elevated right copula of the diaphragm.