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 . Streaky basilar opacities with mild elevation of the left hemidiaphragm suggest minor atelectasis . Elsewhere , the lungs remain clear .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .