Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously noted consolidation in the anterior segment of the left upper lobe has improved when compared to the prior study , with residual opacity noted , compatible with improving pneumonia . Heart size is difficult to assess given the presence of a moderate left and small right bilateral pleural effusions . The effusion on the left has increased in size while the effusion on the right appears relatively unchanged . There is associated bibasilar atelectasis . The mediastinal contours are stable . New ill - defined opacification within the left apex may reflect a new area of infection . The pulmonary vascularity is not engorged . No acute osseous abnormality is seen and there is no pneumothorax .
    OUTPUT:
    
1 . Residual opacity in the left anterior segment of the left upper lobe is compatible with improving pneumonia . 2 . New ill - defined opacification within the left lung apex may reflect a new site of infection . 3 . Slight increase in size of the moderate sized left pleural effusion , and slight interval decrease in size of small right pleural effusion compared to the prior radiograph . There is associated bibasilar atelectasis .