Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal , and hilar contours appear unchanged . There is no pleural effusion or pneumothorax . A small hyperdense nodule projecting over the right upper lung suggests a small unchanged granuloma . Otherwise , the lung fields appear clear . Bony structures are unremarkable .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .