Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . The cardiac silhouette is moderately enlarged . There is mild central pulmonary vascular engorgement without overt pulmonary edema . No large pleural effusion is seen . The lower right paratracheal region , there is 2 cm ovoid density is of unclear clinical significance . No priors available for comparison . Findings may represent a calcified lymph node . Degenerative changes are seen along the spine .
    OUTPUT:
    
Moderately enlarged cardiac silhouette and a mild central pulmonary vascular engorgement without overt pulmonary edema . 2 cm ovoid density projecting over the lower right paratracheal region of unclear clinical significance , but may represent a calcified lymph node . This could be confirmed on a non urgent chest CT .