Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation is seen . There is minimal left base atelectasis . No pleural effusion or pneumothorax is seen . Somewhat rounded retrocardiac opacity is nonspecific but may relate to a hiatal hernia . The aorta is somewhat tortuous . The cardiac silhouette is top - normal in size .
    OUTPUT:
    
No acute cardiopulmonary process . Somewhat rounded retrocardiac opacity is nonspecific , but may relate to a hiatal hernia .