Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph provided . The heart is moderately enlarged . There is no evidence of pneumonia or overt CHF . No large effusion or pneumothorax is seen . Bony structures are intact . Tiny clips in the left axilla noted .
    OUTPUT:
    
Cardiomegaly without signs of pneumonia or CHF .