Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . Vague nodular opacity projecting over the right lower lung represents atelectasis , less likely pneumonia . No large effusion or pneumothorax is seen . The cardiomediastinal silhouette is stable . Imaged osseous structures appear intact . No free air is seen below the right hemidiaphragm .
    OUTPUT:
    
Vague nodular opacity projecting over the right lower lung is most likely secondary to atelectasis . Consider repeat radiograph with more optimal inspiratory effort to further assess .