Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were provided . Lung volumes are markedly low on the frontal radiograph , which limits evaluation . Despite this , no convincing signs of pneumonia . No large effusions or pneumothorax . Cardiomediastinal silhouette is stable . Bony structures appear intact .
    OUTPUT:
    
Limited exam with no convincing signs of pneumonia .