Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac and mediastinal silhouettes are stable . Patient has a known large hiatal hernia and air-fluid levels seen on the lateral view likely relates to such . No definite focal consolidation is seen . There is no pleural effusion or pneumothorax . The right side of the upper thoracic trachea appears to take a sharp curve / angle , stable since at least ___ .
    OUTPUT:
    
Evidence of known large hiatal hernia again seen . Air-fluid levels seen on the lateral view likely relate to the hiatal hernia . No definite acute process .