Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The main pulmonary artery contour is again prominent . The aortic arch is calcified . The mediastinal and hilar contours appear unchanged . There is mild interstitial abnormality suggesting pulmonary vascular congestion . There is patchy new retrocardiac opacity associated with a left - sided pleural effusion , probably small in size . There is also an opacity in the posterior basal right lower lobe concerning for pneumonia and visible on both views . Slight blunting of the right costophrenic angle may be due to a coinciding pleural effusion . Fissures are slightly thickened . A surgical clip projects over the upper abdomen . Slight degenerative changes are similar along the thoracic spine .
    OUTPUT:
    
1 . New right lower lobe opacity worrisome for pneumonia in the appropriate setting , although other etiologies such as atelectasis associated with a small pleural effusion could explain the finding . 2 . Widespread mild interstitial abnormality with new pleural effusion and thickened fissures , suggesting vascular congestion .