Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation , pleural effusion or pneumothorax . No evidence of pulmonary edema . Heart size appears mildly enlarged , although this may be exaggerated by portable technique . No acute osseous abnormalities are identified .
    OUTPUT:
    
Clear lungs . Heart size appears mildly enlarged , although this may be exaggerated by portable technique .