Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear of focal consolidation or overt pulmonary edema . Opacity in the retrocardiac region is compatible with a moderate hiatal hernia . There is at least mild cardiomegaly likely exaggerated by AP technique . Coronary artery stents are identified . Atherosclerotic calcifications are noted in the thoracic aorta . No acute osseous abnormalities identified .
    OUTPUT:
    
Cardiomegaly without definite acute cardiopulmonary process . Moderate hiatal hernia .