Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged . Mediastinal and hilar contours are similar with enlargement of the hila bilaterally compatible with pulmonary arterial enlargement . Pulmonary vasculature is not engorged . Patchy right upper and lower lung field opacities appear improved compared to the prior study . A moderate size left pleural effusion may be minimally increased from prior with continued left basilar opacification , likely compressive atelectasis . No pneumothorax is detected . There are no acute osseous abnormalities .
    OUTPUT:
    
Right upper and lower lung field patchy opacities may reflect areas of infection , but appear improved compared to the previous radiograph . Moderate left pleural effusion appears mildly increased from prior , with continued left basilar compressive atelectasis .