Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were compared to previous exam from ___ . The lungs are clear of focal consolidation . There is no effusion . Cardiac silhouette is enlarged but stable with density projecting behind the heart , suggestive of a hiatal hernia . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process . Hiatal hernia .