Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal range . Costophrenic sulci are partly excluded , but there is no evidence for pleural effusion . There is no pneumothorax . There is a patchy right mid lung opacity , not present before and suggesting a subtle focus of infection . Streaky left basilar opacity is also present in the retrocardiac region .
    OUTPUT:
    
Patchy right mid and left lower lung opacities concerning for pneumonia .