Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes . There is no pleural effusion , focal consolidation or pneumothorax . Hilar and mediastinal silhouettes are unremarkable . Heart size is normal . Small to moderate hiatal hernia is seen with air - fluid level projecting over cardiac silhouette . Partially imaged upper abdomen is unremarkable .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Hiatal hernia .