Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mild - to - moderately enlarged . The mediastinal and hilar contours appear stable . There is a small - to - moderate pleural effusion on the left side with patchy parenchymal opacification . The latter may be due to atelectasis although coinciding infection is possible . On the right , there are similar but much less striking findings suggesting a suspected small effusion with patchy opacity in the adjacent right lower lobe . There is a mild diffuse interstitial abnormality which is more striking along mid - to - lower lungs than before . Fissures are newly thickened . The bones are probably demineralized to some extent . Small anterior osteophytes are present throughout most of the thoracic spine .
    OUTPUT:
    
1 . Left basilar opacification reflecting an effusion and probably atelectasis , but potentially pneumonia , in the left lower lobe . 2 . Findings suggesting mild pulmonary edema .