Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Low lung volumes result in bronchovascular crowding . There is no focal consolidation , pleural effusion or pneumothorax . Heart size is normal . Mediastinal silhouette and hilar contours are normal . There is no free air under the diaphragm . No acute osseous abnormality . Oral contrast is seen within the large bowel , presumably from a study performed at another institution .
    OUTPUT:
    
No pneumonia or pneumothorax .