Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal AP and lateral views of the chest were obtained . Low lung volumes results in bronchovascular crowding . There is no focal consolidation , pleural effusion or pneumothorax . The heart size is normal . Mediastinal silhouette and hilar contours are normal . There is gaseous distention of large bowel .
    OUTPUT:
    
No pneumonia , edema or effusion .