Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac size is accentuated by low lung volumes and appears mildly enlarged , slightly increased in size compared to prior exam likely due to differences in technique . The aorta is diffusely calcified . Mediastinal and hilar contours are unremarkable . Pulmonary vascularity is not engorged . Assessment for a pleural effusion is slightly limited as the costophrenic angles were not completely imaged on the frontal view , but there appears to be minimal blunting of the costophrenic angles posteriorly on the lateral view which may be due to tiny pleural effusions or chronic pleural thickening , as seen on the previous exam . No pneumothorax is identified . Moderate multilevel degenerative changes are re - demonstrated in the thoracic spine .
    OUTPUT:
    
Possible trace bilateral pleural effusions . Otherwise no acute cardiopulmonary abnormality .