Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , mild pulmonary congestion with small bilateral pleural effusions and mild bibasilar atelectasis is appreciated . A focal opacity is seen in the left mid-lung which , given clinical concerns , could represent a pneumonia . Lung volumes remain low . Heart size is unchanged . No pneumothorax .
    OUTPUT:
    
1 . A focal opacity is seen in the left mid-lung which , given clinical concerns , could represent a pneumonia . 2 . Mild pulmonary vascular congestion with small bilateral pleural effusions and mild bibasilar atelectasis is new since ___ .