Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a right chest wall subclavian line terminating at the cavoatrial junction . The lung volumes are low . There is no focal consolidation , pleural effusion , or pneumothorax . The heart size is top normal . There is no evidence of free air .
    OUTPUT:
    
No evidence of free air or acute cardiopulmonary process . Borderline cardiomegaly .