Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded and clear . No focal consolidation , edema , effusion , or pneumothorax . The heart is enlarged . Retrocardiac opacity on the frontal and lateral view is presumably a moderate to large hiatal hernia . Aortic knob calcifications are mild . The descending thoracic aorta tortuous . Bilateral degenerative changes in the acromioclavicular joints are mild - to - moderate . There is no free intraperitoneal air .
    OUTPUT:
    
1 . No focal pneumonia to explain the patient 's right upper quadrant pain . 2 . Cardiomegaly .