Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Right basal opacity persists and remains concerning for pneumonia . Subtle streaky perihilar opacities may also reflect an atypical infection . No pneumothorax is seen . There are small bilateral pleural effusions . The cardiomediastinal silhouette appears stable . Bony structures are intact . Subchondral cystic changes of the left shoulder noted .
    OUTPUT:
    
Perihilar and right basal opacity concerning for infection . Overall , no significant change from prior .