Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest are provided . Subtle retrocardiac opacity is seen best on the lateral projection which could represent a lower lobe pneumonia , likely right - sided . Aside from this , the lungs appear clear . The cardiomediastinal silhouette is stable . Bony structures are intact . A calcified density is again seen projecting over the left shoulder in a somewhat different position , suggesting mobility .
    OUTPUT:
    
Findings concerning for pneumonia in the right lower lobe .