Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A focal opacity is noted in the right lower lobe , concerning for infection . Mild patchy opacity is also noted in the left lung base , potentially atelectasis or additional site of infection . The cardiomediastinal silhouette and hilar contours are unremarkable . No pulmonary edema or pneumothorax .
    OUTPUT:
    
Right lower lobe pneumonia . Additional patchy opacity in the left lung base could reflect atelectasis or additional site of infection .