Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Hazy right lower lobe opacity may represent pneumonia or atelectasis . There is no effusion or pneumothorax . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen . Aortic calcifications and dense mitral annular calcifications are similar to prior .
    OUTPUT:
    
Hazy right lower lobe opacity may represent pneumonia or atelectasis .