Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographdemonstrates well expanded lungs . No CHF or focal infiltrate is identified . No pleural effusion or pneumothorax . Heart size , mediastinal contour , and hila are within normal limits . New ill - defined opacity focal opacity in the left supraclavicular region was not seen on the ___ radiograph , but most likely represents artifact that lies outside the the patient . Limited assessment of the upper abdomen is grossly unremarkable . No free air is seen beneath the diaphragm and no dilated air-filled loops of bowel are seen .
    OUTPUT:
    
Chest x-ray exam within normal limits . Specifically no pneumothorax or evidence of congestive heart failure .