Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is normal in size . Lung volumes are decreased accentuating the bronchovascular structures . There is no focal consolidation , pleural effusion or pneumothorax . Retrocardiac air - fluid level is secondary to a moderate hiatal hernia .
    OUTPUT:
    
Decreased lung volumes . No acute cardiopulmonary process .